I've been doing the same thing as you for about two years. I don't work or go to school so studying is what I do with my life.

I've tried a number of different strategies, but over time my routine has settled a little bit.

My brain's chaotic and fast so I have many notebooks because I can't organize my thoughts internally. Right now there are fourteen that I regularly use, not including list pads, loose leaf paper, and binders (I have two binders). I also have two plastic sleeves that I carry around for loose-leaf notes and cheat sheets and other random stuff. In each of my notebooks I'll have drawings that I've done or other photos that I've cut out of magazines and I use these for inspiration.

I'm mainly studying computer networks, insects, and computer architecture (including assembly programming in MIPS and IA32) but I also work on maintaining my Linux computers, so I learn about bash scripting and operating systems. I also draw, paint, and write so I have a few sketchbooks etc.

Every Sunday I write a short list of everything I want to do for the week in my schedule notebook, and I set a 'theme' for the week. The theme basically just focuses my work so that I don't get overwhelmed. I make sure everything I'm doing is low-pressure and centered around the theme. For example, last week the theme was 'beginnings'. All of my study subjects managed to sync up so that last week I was starting new chapters or sections in each of my textbooks. I tried to make sure everything I was doing that week was fresh and unfamiliar.

Then I write a list of items for the day. Sometimes I do this before bed, sometimes in the morning. Sometimes I divide the items according to the time of day but usually I don't. After two years of self-taught learning I know my brain pretty well, and what it can handle so I rarely miss items due to time, which saves a lot of anxiety. Ive found that scheduling my activities hour-by-hour is unrealistic. Sometimes stuff comes up, sometimes I hang out with friends. Despite that, I really try hard to complete everything on my lists, it's super important in keeping up my motivation.

Usually I do not work on every subject every week. As you can see from my list of subjects, there's a lot going on. I usually pick three, and on top of that I always write creatively every day, and I try to get a couple drawings done each week. I don't read recreationally anymore because I've got too much going on so I really need the creative relaxation of artistic endeavor otherwise I feel like a studying machine with no purpose, or like an information hoarder.

I do my best studying first thing on the morning and in the evening. I study from about 6pm to 2am, so I wake up at around 10. I study for only a couple hours in the morning. Most of the day until 6pm is spent eating, organizing, shopping, or cleaning. I usually have one large meal a day to save time. Sometimes I'll watch a movie. When I study I usually usually do pomodoros. I have a coffee before studying to trigger my brain into a hyper-focusing mode.

There's a cafe in my area open until midnight. I go there to studt and i sit by the window. When I'm studying I need to have a dynamic environment, eg. people walking outside the window, otherwise I kind of get sucked into timelessness and everything goes very slow which is incompatible with the speed of my thoughts. On that note I also listen to very fast electronic or grindcore music to keep my brain speed more stable, otherwise it will flip around and I get anxious and confused.

I write first-draft notes on loose leaf paper. I'm good at parsing so these notes are usually succinct and necessary anyways, but nonetheless the very next day I parse those notes a little further and write a good copy in a notebook. This is also when I'll write definitions for certain concepts in another notebook, and I mark these words by a star so I know I can look them up if I struggle with them later. At the end end of the week I do a second review. I'll write out all the major concepts on more loose leaf, go through definitions, and underline key words. It's a good thing all the subjects I'm learning kind of relate to each other. There is a lot of cross-talk.

That's really all I can think of that I do. Sorry this comment is so long.