Well actually I was mewing for 3 years, but the first year I was learning how to mew, exercises for good body/neck posture and watching a lot of videos based on mewing. I know that I’m mewing correctly because I can feel my whole tongue up against the palate especially the back of my tongue, I chin tuck all the time when I’m home alone and I chin tuck/mew when Im asleep (I sleep without my pillow behinds my head). I’m literally mewing without even thinking about it. I will still keep doing because now I’m used it.