notasexualdodo said:
I wonder what's a good way to regain passion for drawing

From experience, giving myself a little urgency has worked a treat. Doesn't have to be too demanding, take small requests from imageboards or wherever if you're not too insecure about your art.

I started taking commissions to give myself a clear deadline and it helped me with my drawing duration and pushed me to actually want to improve my art quality for once. Though, it's really something with a lot of responsibility and I still haven't reopened for a lot of other reasons.

In any case, don't take it as an instruction, I don't know about your circumstances. I myself haven't drawn for more than a week due to college+stress, and could probably use everyone else's advice once I'm done with finals.