What do they do in ED treatment to help someone gain weight?

I have struggled to gain for years. I believe I have arfid (self diagnosed ofc) and so I hate eating, don’t get hungry, and can sit in bed all day and starve myself without ever wanting to eat anything. However I absolutely hate how skinny I am. I’m about 93 lbs currently and I would love to get to a healthy 105+. My issue is that whenever I try to force myself to eat it actually hurts when my stomach gets full. And I get full after taking three bites of anything. Food isn’t appetizing to me. I drink ensure nutrition shakes all the time bc I don’t eat. I also have a bad habit of cooking food and never even touching it but feeling like I already ate bc I cooked. Anyways I am currently lying in bed with a nutrition shake in hand that I don’t even want to drink but my stomach is growling and I have a full day of work ahead so I need the energy. I will drink half of it then be full and almost throw up forcing myself to drink the second half of the measly 8 ounces. I hate how bony I look and I just want some extra weight so I look more feminine. Does anyone have any advice on how I can gain or actually create an appetite. Also I’ve tried working out too and it rarely helps my appetite