Burnt out and I don’t know how to get out of it

I have a 4 year old and an 18mo. My husband works out of town Monday-Thursday, March-November for the past three years while he works towards getting certified in his field.

I am burnt out. Hard. I lose it on my kids more, I cry almost every single day, my sleep is absolute garbage. My therapist says I need to find hobbies for me, things to help me relax. I don’t know how to do that when all I want to do is cry/sleep/maybe watch tv. I doom scroll my phone and I know this is an issue I need to work on.

I have greeting card kits galore that I loved doing pre-18mo, cross stitch patterns half finished, I have enough books to fill a small library. I bought a new switch game at the beginning of June and I played it all the time and now I don’t even want to touch it. I try to go to the gym when my husband is home but it’s hard when the weekend is full with family or kid activities. I see friends at least twice a week. I just don’t FEEL like doing anything. And some of the things I actually would like to do (like an evening walk with my dog) I can’t do without having outside help from my family and feeling like a burden.

How do I get back into my hobbies? How do I get un-burnt out? I’m set to go back to teaching in September and I KNOW that it will get exponentially worse if I don’t figure it out now.