You can carve out hours in the quiet mornings if you sleep earlier OP.
I awake about an hour ago I intend on doom scrolling for another half hour, and then have a chill with coffee and a book until the rest of the house gets up, it's Sunday so I reckon I have 3-4 hours peace.
Summer is the time to shift your hours, the mornings are light, warm, quiet.
I used to be an owl, my favourite time to feed the babies was 3-4am when the rest of the world, or so it seemed was sleeping, I used to listen to the radio or more bizarrely watch live sky sports, it's crazy there is live sport going on somewhere on the planet at all time. Just so I felt someone else was awake.
And the other thing to remember is not everyone needs 8 hours sleep at night, some people thrive on less, I think I am a 7 hours type person, and if you can nap in the day you don't have to do a whole block in one go.
Humans aren't robots.
But if you need more sleep and are avoiding it, well there isn't much going on at 2am on the whole, you aren't missing much (unless live cricket from India is your thing).
I understand the wanting some time in the day away from the grind and people wanting stuff off you. But being fatigued throughout the whole day, for me, is worse than trying to get time out.
Saying that I am having time out now I am awake, downstairs but have no intention of doing anything for anyone else for at least 3 hours, I'm looking at how the rising sun is illuminating the garden trees in a different way, making a (very decent) coffee slowly and have a book I want to get firmly established in.
Basically whatever you do, how much and when you sleep, the main advice is to just lean into it and stop overthinking it. If you want to stay up late stay up late.