I use a website called MathAcademy, it's very expensive but I've found it's best for me and motivation. There's better structure to learning than KhanAcademy I've found. Khan teaches you something but doesn't really reiterate over it later, so you might learn something a few months ago then have to relearn it to get past the next Khan questions. What ended up making me ragequit it completely though was having no idea what I was supposed to search for when they were talking about a maths problem, using maths I had learnt but forgot, and I spent ages trying to find it to not be able to find it. Mixed in with the only weekly streak keeping you going on Khans, it didn't really motivate me very much, but this other website I use, the daily goals of reaching 30xp or 50xp keeps me active. It constantly reshuffles older teachings into your pile too, which is better for longevity in that knowledge, and the lessons are sort of short and to the point. It felt on Khan, I'd spend about 15 minutes on a lecture to do 5 minutes of maths to have to repeat it, so I also wasn't very fond of the nature of having to sit through mountains worth of videos to progress.

Long rant, but Khan is free and it's good, but if you can afford it I'd say mathacademy is probably more worthwhile. I feel like if they lowered the price, I'd probably stick to it long after I'd need it for college based things.

My routine, when my days are stable include: Japanese, Spanish, Irish, Maths, Programming, Blender, Exercise, Meditate. I do projects like VRChat worlds/avatars and stuff if I'm tinkering in Blender, Godot/boot.dev stuff sometimes with programming. I'm actually not good at most of these and still have to rely on friends for input for various aspects like Unity quirks/baking, languages/meanings, programming and the like. The meditation might seem like what's the point, but I've often ended up thinking about what would help me, and it tends to be the main thing popping back up as potential solution, so I also give that time too. I've also been on and off these tasks for various years, but I think what I'm learning the most about this trial is just learning to dedicate time towards it and be consistent.

I'm not working at the moment, so I'm sort of preparing myself for a full college life when the time hits. I sort of expect a lot of these tasks to run off into the abyss (except the maths/programming and Japanese/Spanish). So I try keep a rigid schedule so I'm a lot less overwhelmed by college when it starts. I have study sessions with a game developer friend as well as my GF. We all do separate things.

The apps I use to study Japanese are MaruMori and Busuu. For Spanish it's Duolingo and Busuu (in the near future, also Conjugato). For Irish it's a mixture of Rosetta Stone and physical books, sometimes Duolingo if Rosetta Stone annoys the crap out of me, because those audio screenings are terrible. Maths is MathsAcademy. Programming is boot.dev, YouTube tutorials (ClearCode on YT is fantastic for starting off), misc other tutorials and friends help. Blender I use Udemy and YT tutorials, along with asking a Blender guru I happen to know. Exercise is my bike/dumbbells. And Meditation I use GuidedMeditationVR (no voices), or Playne, if I don't want to enter VR, I just put on some low disturbing ambience music then try meditate for 30 mins.

Wall of text. Sorry.