Maintenance after Anorexia Recovery

So, I'm finally at a healthy weight (somewhere between BMI 19 and 20, can't really tell because I have still some water retention left), and I'd like to know how am I supposed to find my maintenance amount. Should I just cut it back, or gradually decrease the calories?

I ate about 3000 calories to gain, sometimes even more because my body was SO starving. But now the hunger has decreased, and I have reached a healthy weight that I can try to maintain. So... I'm not very active, I spend most of my time seated, so maybe my maintenance would be around 2300-2400? And maybe 2500 on more active days? Any thoughts and advices on this will be very much appreciated! :)

Bump!

Most doctors recommend continuing at a minimum of 2500 for at least a few months after weight restoration- just to make sure your body continues getting the nutrients it needs to repair itself.
I would suggest lowering your gaining amount slowly to make sure you don't initially lose any weight (which is a slippery slope). Maybe go down by about 200 this week (2800) and see how your body responds. If you continue to gain, you could decrease to 2500.
Take it slowly! You are still at the minimum BMI so you have some wiggle room in terms of gaining, you know? Also, being an active teen, your body still probably needs more calories than you'd think. Do you have someone monitoring your weight or do you do this yourself?