Wow! Your circumstances have certainly changed, and it sounds for the better. Better too with the new diagnosis, at least you have somewhere to aim now rather than just being carried along by symptoms and feelings you could not account for.
Overcoming that eating disorder is a pretty momentous thing, you must have a reserve inside you to do that.
It is all very well for a therapist to say, OK your life is better now, it's time to get started on the therapy.
It does not always work that way. I had a psych tried that on me when things were too fresh, it only made me worse, and I simply avoided everything, felt guilty over that , and at the same time relived all the unpleasantness that caused the problems.
Since then I had a fresh start wiht another, and ever since then have been the one to initiate conversations over painful matters - and that has worked a lot better. No more anticipation (which can be worse than the event) for a start.
I recognized it was something that had to be done, not avoiding it, but at the same time not being injured by it.
Please tray to yourself
"Don't let me, don't let me down"
Look, it may not mean you don't still curl-up in a place of safety before or after, however the big difference is you will have initiated it, it is you in control, it will be on your terms.
I hope that makes some sort of sense?