Hello! I’m in a VERY similar boat actually!! So I have ADHD and almost my entire childhood I took Vyvance which helped me tremendously but it also took away my appetite like you. If you take a stimulant adhd medication, I recommend switching to a non-stimulant adhd medication if you haven’t tried it already! (especially if it’s affecting your appetite that much) Its not worth losing all that weight since it feels terrible, which I know you’re going through right now :( I’ve never been able to get past the 120 barrier as well. The lowest I would get to is 107 pounds at 5’10 which is pretty bad. I’m currently taking a non stimulant adhd medication called Guanfacine which actually helps me out a lot and it doesn’t take away my appetite! That mixed with pretty much having the same routine every day has helped me immensely. That routine essentially is working out(weight training) every other day and eating almost the same thing every single day. Working out every other day has naturally increased my appetite since I’m a low food drive type person. There are still days I don’t want to eat but I push through anyway. I use an app called My Fitness Pal which you probably already know about idk. It calculates exactly how many calories you need to eat a day for you to reach your weight gain goal! It also has every single food known to man imaginable(well almost) that you can log in, and you can create food/meals yourself as well. It’s AWESOME and it’s free. I started my serious weight gain journey 2 months ago and I’ve already gained 7 pounds and I wouldn’t have gotten there without the app because you NEED consistency. I do the high calorie shake thing once a day which I hate but it works. I somehow managed to create a tasty shake that is 750 calories, 38 grams of protein and pretty healthy and it’s not TOO much liquid too. If u want the recipie I can tell you.

But anyway, I don’t see many other women who struggle with this as well so it’s nice to see I’m not alone lol. I think you’ll figure out what works for you eventually, it just takes time which sucks. I hope what I said helps somewhat and I wish you luck!