I Want to Be Thin

I'm the kind of person who doesn't have to work out to stay thin.
Buuuut now I'm taking medication that I know will make me gain weight.
I've been waking up at 3-4 in the morning for a midnight snack for 3 nights now.thats not like me but that's how it is now.
Also I've been eating soooo much I'm very surprised at my own appetite.
I'll have to do what everyone else does to stay slim.workout and stuff 😅