Gaining

I've been gaining weight at a good pace these past few years (gained 50 pounds). But now I'm stuck at 220 and I don't know how to make myself eat more than I do now. I'm constantly full. Do you have any tips to help me gain weight? Like what should I eat or what I should do to increase my appetite

You can flip the recommendation people give to lose weight- one of the most common recs they make is to cut out mindless eating like when you watch TV, scroll on your phone, are reading a book etc.

If you make an effort to instead intentionally start eating mindlessly while you do any of those, it definitely adds up! Things like flavoured popcorn, chips, candies are inexpensive, no prep time and high calorie so would be an easy way to implement that. HTH