HELP with anorexia!? please answer! i need advice?i dont know how i should be eating now?

Im 5'3 1/2 almost 19 years old and 90 lbs. i have been anorexic for about a year and for the past 8 months have only consumed between 100-300 calories a day at most. i have just started eating healthy again but i feel like im going to gain weight too fast. i dont know how many calories i should start out eating and i dont really know what to do. i dont want to gain weight too fast. i dont have medical coverage right now so i cant go to doctors/nutritionists etc. i need to rely on what you guys are telling me cuz i have no other resources right now