How to recover from anorexia without gaining weight?

hi there, thanks for clicking on my question! i am just starting the recovery process from anorexia. its been about 3 weeks now and ive put on 2 pounds so thats good i suppose - scary.. but good! at the moment i am 5 foot 7 and weigh 105 lbs. my brain is telling me i need to lose but i am making sure that wont happen! i want to be able to eat like all my friends.. but how can i recover without putting on any more weight as i am happy with my weight at the moment and know if i gain more ill be more enclined to relapse and lose more !! thankss for your help!