You sound pretty stressed out.
All fandoms end at some point. MLP fandom is still going strong in my opinion. In the least strong enough to last until the canon show does.
We got potential to attract lot of attention to MLP fandom again, albeit likely only negative one. I hope to see you guys this week celebrating.
I wish I could say that we can just make MLP go out with a boom and make it awesome. I wish I could say that this fandom will have different end than other fandoms but I am yet to see an exception to this. The flame is slowly dimming down, only last diehard fans will remain in the end.
Good thing is that excluding the plot of the show, everything else is possible to replicate. Magical fantasy world with loose canonical logic, yet maintaining tether to the 4th wall. Adorable yet in a way attractive looking characters. Unique social structures. etc...
I am not saying it would be easy, it would be hard even for professionals but not impossible.
I think you have no obligation to make more content. What's the point of making creation when you dread the process of creating it. I think it could reflect on your creations.
If you don't want to stop your efforts but feel like its too much, you simply need self improvement. You need to take a very good care of yourself. Cater to every one of your needs. Enstablish healthy balance between tasty and healthy food. Between productivity and leisure.
Get to bed sooner because you can just get up earlier and feel better, not actually losing any hours of life. There's no way around the sleep regime, you are going to have to catch up with your sleep debt at some point.
Take advantage of every tool you can get your hands on. Organizers, calendars, note taking app, alarm for 20 minutes power nap, f.lux for pc to prepare for sleep, apps to lock time wasting websites to awoid procrastination, othe means of automation. Try to do all your chores that are done in specific room once you find yourself in that room. Like, bring shaving tools to bathroom when going to brush your teeth, you may as well shave your face while at it.
Lastly, stop feeding your unhealthy hobbies like watching tv series, vidya, porn, etc. Swap them for other hobbies like drawing, writing, composing music, shitposting, reading, etc. Whatever comes up to your mind, but it has to muffle and ultimately replace your former urges so it needs to be enjoyable but *non-degenerate*!
I can relate to you in terms of being stingy and lonely. Today I found out that creative process potentially is more exhausting than degenerate hobbies. This makes it hard to do your creative hobbies when tired.