Hi Seekersinking, yes I think it was zinco (????) on here not so long ago who really stressed how important sleep was. And of course that makes sense in that if you're physically drained then that's going to have a big impact on you emotionally too.
Hopefully zinco???? or someone else who can go into more detail will be around soon but for now here's some links which may hopefully help with getting back a little better sleeping pattern (???) alongside your T's advise:
Can?t Sleep? Causes, Cures, and Treatments for Insomnia
Insomnia? 42 Simple Tips to Help You Get to Sleep - Insomnia treatment, cures
How to Overcome Insomnia, Sleeping Problems and Sleep Disorders
Naturally it's worth keeping on in addressing the depression just as much as well though, as depression and sleeplessness are both going to impact on each other.
Hoping something in the links might help just a little!!
Best wishes
Alison