I'm like this but four kids. The kids are my life, but in another way the two hours when they're in bed are my life. I try and get household shit done in tiny increments throughout the day - cleaning the kitchen in the morning before I start work, doing laundry at lunch, cleaning away dinner stuff while they brush teeth, so that I squeeze a little more self time in the evenings. In those hours, I have side projects I work on. And I do WAY too many. People would look at my life and say I need to focus on one thing to finish it, but I've learned (for me at least) that happiness comes from having lots of options when you have that free time. I forgive myself for not making major progress on things, not being productive outside of work, and I try to just enjoy my time whether it's writing fiction, building board games, hobby coding, messing with unity, reading, building models, casual gaming etc. lately I've been doing needle felting because I picked up a cheap Halloween decoration of a needle felt cute vampire. Halloween is long over but I'm not beating myself up about it. All my hobbies follow a pattern of things that I can pick up where I left off with minimum fuss. I don't do anything that takes an age to set up or has a minimum time commitment.

I would say hang in there, and once in a while give yourself permission to prioritise the "care for myself" over the "maintain a household".

Do things in little increments and don't torture yourself about not being full of energy all the time