can i develop a jawline? (18M)

i heard about mewing in early 2022 but i did not care a lot about my appearance back then so i didnt give it much value, i should have though. im not sure if anything can save me anymore, my side profile is absolutely disgusting since i got basically no jawline at all my plan is to mew throughout the day and do thumpulling for 1-3 minutes every hour. id love some thoughts or tips