I've got a few slightly conflicting pieces of advice. Disclaimer: I'm not an artist, but I write and I think some of this is transferable between all creative arts.
Do a little bit every day, no matter what. Even if it's just a slight bit of shading, or just a line or two, you must always touch your work.
There's a few reasons for doing this. First, no matter how shit your day, no matter how terrible anything goes or how empty you feel, you've made a small bit of progress over the previous day. Second, it sows the seeds of discipline and helps break the expectation that you can only create when the inspiration strikes. Of course, you'll always be way more productive when the inspiration DOES hit, but it prevents you from being crippled when you're "not in the mood" or lack motivation. As someone else said on another thread, feelings are temporary. Third, with all those little bits of progress, a month or sometime later you'll look at it and surprise yourself with how much has been added to it over that time. I usually find that a fairly pleasant feeling, and it helps contribute to my motivation.
Step away from your work. Read a book, play some games, hang out with your friends, have some nice food, pick up a new hobby, etc. Actively develop your life beyond your creative work.
When you're stuck in a rut like this and you worry about not being able to create, your worry will make it even harder. Getting away from your work isn't enough, you have to mentally put it down for a while. But that's not usually possible because it'll haunt the back of your brain, and then you'll feel bad about not drawing. Picking up a new activity, like maybe signing up for a weekly sports activity, helps to hold your attention and fill your mental space.
Apportion your time. Be very intentional about what you're going to get done each day. Actively make the decision that "today, I will use my time after uni work to read XYZ".
Determine how much time you have for the day and then divvy it up as makes sense to you. You mention that you've got uni commitments and many things you want to do, right? By making the intention clear to yourself, it helps mitigate that feeling of having "wasted time not drawing". Because now, it's not that you messed up by not drawing, it's that drawing is just not on today's agenda.
In the end, we only have 24 hours a day, and it's really really tough pursuing creative work while dealing with the rest of life's commitments. It's always so time-consuming. But we make our sacrifices to pursue our passions. So it goes.
Now, these all sound somewhat contradictory. How can I do a bit everyday but also step away from my work? How can I allocate my already rationed time to my present interests and ALSO add more things to do? How can I do a bit everyday when I already have so little time? Madness!
It's a bit of an ebb and flow thing. I have my writing document up permanently on my computer, and I try to get in at least a sentence everyday, or edit a previous portion if I can't, or just note down some potential ideas. Some days I'm really productive and chunk out 1000 words, other days I'm lucky to get 3 words out. But it grows.
Meanwhile, earlier this year I signed up for a pole dance class. I've always been very sedentary and not athletic, so this was a pretty big challenge for me. But it's just one day a week, so it's not too much, and conveniently serves as good exercise and safeguard my health a little. From this class, I've made friends, learnt a fair bit of stuff and pushed myself quite a bit. But just as importantly, it's come to occupy an amount of brainspace that would otherwise have been brooding about my creative work. And in some strange way, it's helped to revitalise me somewhat. Even though I lose out that one evening every week where I could otherwise be writing/gaming/reading, it injects energy into my system and makes the rest more enjoyable.
As for number 3, I have around 3-4 hours each evening to allocate between my interests, so I determine each day how I want to spread it out. To be sure, I've not been able to play some stuff that I had wanted. I got Remnant 2 and wanted to beat the game in full (ie, on highest difficulty). But after beating the main game once, I've not had the time for it. I don't lament that exactly, because even though I would like to continue playing it, I know I've allocated my time to something that I deem more important, and by definition, it's worth it. Hm, I guess number 3 should specify priority management.
Also, don't freak out or flagellate yourself if you can't quite stick to your plans. Some days I allocate more time to writing, some days less. Some days I allocate a lot of time to writing, but can't write shit, so I decide "okay, abort and do something else". It's fine to change your plans, as long as you had your plans to begin with.
Obviously, pick and choose whichever advice makes sense to you. Whatever sounds dumb to you, don't do it.
Lastly, your art looks pretty good to me! I looked through your folder and I think your posework is quite decent.
