I think you got it @Captain24 😁
I think the other thing to be mindful of though is the anhedonia side of things. Which you said sounds pretty accurate for how you're feeling, that lack of feeling pleasure?
So I think in anhedonia there's actually decreased activity in the pleasure centres of the brain. Ever heard the phrase, 'Neurons that fire together, wire together'? It basically just means the more we think/behave in a certain way, the stronger the neural connections for that thought/behaviour. So, effectively the 'pleasure neurons' have kinda faded from disuse - they're not wired very strongly. Which is why things that ought to be pleasurable feel much more dull and difficult to engage with - cos it takes more energy for our brain to utilise those not-as-strong neural pathways.
All this is basically to say that sometimes in order to reignite that experience of pleasure, we have to work on strengthening those neural pathways again. Since the pleasure and motivation centres of the brain are both run by our old pal dopamine (that guy doesn't like me very much... teehee ADHD joke), doing stuff that increases dopamine is a good place to start:

That last point too - try something new!! Maybe part of the reason you're feeling burnt out on your arty stuff is because a) you've been doing it too much because you 'have to' and b) you've been forcing yourself to do it. I dunno if you've ever heard of the Persistent Drive for Autonomy (also called Pathological Demand Avoidance but I think that's just a bit pathologising hey)? Basically it's like... if you're gonna do the dishes in like half an hour. Then before you get up to do them someone comes n says 'Hey can you do the dishes?' and suddenly you really just don't wanna do it anymore. I wonder if this sense of 'I have to do my art' could be a little bit of PDA? That plus the added shame of 'because it should be good for me' is a recipe for disaster!!
So don't beat yourself up about it ok hun? This is all part of the trial and error of trying to find what works best for us for our recovery. Can take time, and come with pitfalls and frustrations. But you're still making progress! Finding out what doesn't work can be just has helpful as finding out what does 😊
Also creativity can't be forced. Just saying.