Advice for T

I have quite some issues with food and stuff like that (AN) and I’m currently underweight, but if all goes well with my process then I’ll probably start T soon! I’m really stoked for it but also a bit nervous.

Would undereating completely stall the T? I do plan on eating more cause I’m quite sure it would help with building muscle and my body is also definitely in need of it, but nonetheless, does anyone have any more advice?

Taking into consideration with like effects of T and stuff like that, are there any things that I SHOULD definitely do or things that I definitely SHOULDN’T do?

Thanks!! ^_^