2.5 years. Likely not. Still, depends on the amount of hard work and discipline you put in. But what you're asking for, likely not before 5 years or something.

Let us also note that your morph is not true forward growth. The entire maxillary area was left the same in the picture; only the mandible changed. Your real result would look much more aesthetic than that. 

I've been browsing the forum and Orthotropics channel with an unhealthy amount of interest and I just wanted to check if I have an understanding of the process.

Before I can rotate the lower jaw forward, I need to rotate and move the maxilla up and forward. Before I can move and rotate the maxilla up and foward effectively, I would need to expand the intermolar length.

My current intermolar length is about 35mm. If I mew properly with the posterior 3rd up on the soft palate and tip of the tongue resting on the tip of the hard palate behind the teeth, and I apply pressure at the roof of my mouth with help of the chin tuck for long durations of the day and while I sleep, then with hard work I could possibly see 1mm expansion a month. 

In order to close my mouth properly at night subconsciously and apply more force when mewing, I need to chew hard things and build up the masseter muscles.

Aesthetically, I probably won't notice any improved change in my profile for at least a year. Based on my short intermolar length, I would need to widen that first and I'm choosing to only use my tongue. Aesthetically, the only thing most likely to change is bigger masseter and temporal muscles.

My Mew indicator line is about 52mm, so I have a long way to go in terms of improvement, but I believe there is more to life than looking good or normal, I believe in helping other people and always working with what skills I have and trying to overall be a better person.

My first goal should be to work on trying to sleep and wake up with lips closed, teeth lightly touching and tongue still on the roof of the mouth.

Let me know if I have anything wrong, I'm trying make sure I don't set my expectations super high only to be severely disappointed. Yet, I'm aiming to be really ambitious and hopeful as I put in work in the process. I'm also aware risks are involved since I'm responsible for my own changes. Mentally, I'm trying to prepare myself of all outcomes.

The visualization is kinda wrong. Mewing pushes your maxilla forwards and up, the mandible (lower jaw) forwards and down, the chin forwards and up. Your face will probably slowly start looking more and more solid, but not like how you edited your side profile. Expect something more along the lines of the attached picture.

You need to chew Falium (turkish) or Mastic (greek) gum on top of mewing tho, also tape your mouth shut during the night (I do it too). Correct your posture, you seem to have forward head posture, it will help.

btw in just 3 weeks chewing mastic gum, posture correction and mewing, I noticed I had masseter muscles attached to my cheekbones where I didn't even think I had before, I can feel and see the marks of my molars biting the inside of my cheeks now, my lower lip got smaller and healed, now I have room to mew and I got used to mewing during sleep (even if I tape my mouth shut for good measure).

This will work imo, just be diligent and keep at it, slowly it will get easier and results will come.

maybe like this? best case scenario for 2.5 years

 if you do everything and stick to it like a mofo

Posted by: gubbbbb

maybe like this? best case scenario for 2.5 years

 if you do everything and stick to it like a mofo

Hmm, imo it still fails to account for maxilla moving forward and the teeth straightening / arch widening (the guy has 35 mm ... he will need to get to 42-45 mm). His entire upper face needs to move a bit more forward, nose slightly up and forward, back of the mandible a bit more down and in 2 years the masseter muscles will be hypertrophied from chewing so more mass in the back and cheek bones, chin a bit more up and reduce the distance between the chin and base of the nose as the mandible swings up a bit more (ie you cant have the same distance there, simple mechanics). His lips will probably not meet the same way as now as well.

His pic has forward head posture, so his head tilt is all wrong tho. See here, what just tongue posture did to her mandible in about the same time:

before mewing, 1 year in 3 years in

Click it to activate gif

Thank you so much for the information and encouragement. I want to make clear that the image I gave isn't my own but a sample that I found on the forum, I don't want to catfish anyone. I apologize to the guy whose portrait I used, I should have drawn an image of a recessed faced since I don't want to show my own.

Posted by: m23tew

Thank you so much for the information and encouragement. I want to make clear that the image I gave isn't my own but a sample that I found on the forum, I don't want to catfish anyone. I apologize to the guy whose portrait I used, I should have drawn an image of a recessed faced since I don't want to show my own.

Have a look at this: https://symbiosisonlinepublishing.com/dentistry-oraldisorders-therapy/dentistry-oraldisorders-therapy35.pdf

Extract from the link:

Conclusion

A high correlation coefficient between myofunctional therapy in adult patients and intercanine width was found for the upper arch. Repositioning the tongue and practicing muscular exercises for the lips, tongue, face and posture lead to an increase of maxillary intercanine width of 3.2 mm in average and changes of the upper lip length of 5.4 mm within roughly eight months.Changes in the dental formation can therefore be influenced by muscle therapy in non-growing patients.

Posted by: Dominik

Posted by: m23tew

Thank you so much for the information and encouragement. I want to make clear that the image I gave isn't my own but a sample that I found on the forum, I don't want to catfish anyone. I apologize to the guy whose portrait I used, I should have drawn an image of a recessed faced since I don't want to show my own.

Have a look at this: https://symbiosisonlinepublishing.com/dentistry-oraldisorders-therapy/dentistry-oraldisorders-therapy35.pdf

Extract from the link:

Conclusion

A high correlation coefficient between myofunctional therapy in adult patients and intercanine width was found for the upper arch. Repositioning the tongue and practicing muscular exercises for the lips, tongue, face and posture lead to an increase of maxillary intercanine width of 3.2 mm in average and changes of the upper lip length of 5.4 mm within roughly eight months.Changes in the dental formation can therefore be influenced by muscle therapy in non-growing patients.

What are these exercises the study is talking about?

Posted by: drunkwithcoffee

Posted by: Dominik

Posted by: m23tew

Thank you so much for the information and encouragement. I want to make clear that the image I gave isn't my own but a sample that I found on the forum, I don't want to catfish anyone. I apologize to the guy whose portrait I used, I should have drawn an image of a recessed faced since I don't want to show my own.

Have a look at this: https://symbiosisonlinepublishing.com/dentistry-oraldisorders-therapy/dentistry-oraldisorders-therapy35.pdf

Extract from the link:

Conclusion

A high correlation coefficient between myofunctional therapy in adult patients and intercanine width was found for the upper arch. Repositioning the tongue and practicing muscular exercises for the lips, tongue, face and posture lead to an increase of maxillary intercanine width of 3.2 mm in average and changes of the upper lip length of 5.4 mm within roughly eight months.Changes in the dental formation can therefore be influenced by muscle therapy in non-growing patients.

What are these exercises the study is talking about?

Youtube 'myofunctional therapy exercises' . The most important things tho are: tongue posture, neck & back posture, chewing tough gum for a minimum of 1 hour daily (both sides) and making sure you do not mouth-breathe.

I mainly linked the article to show that change is quite possible, in case you decide to develop doubts.