The detail level is roughly around the same as my own comic... so for the sake of argument if we say they're basically the same, on top of my part time job, I could make two pages a week, like with my comic.
If I didn't have a part time job, I could probably do four pages a week.
If I had a full time job, I'd struggle to even keep up with one a week, honestly (I'm autistic, so getting through a full day of work is mentally exhausting for me. I didn't make any comics while I had a full time job).
If I HAD TO make these pages to a tight deadline, I could probably turn out 6 in a week. But if I used that as a maths basis to calculate output, it'd be kind of cheating. I know full well that after about two weeks at that pace, I'd burn out. It wouldn't be a viable long-term thing for me unless I got an assistant.
Sometimes I feel like I'm "slow" but for a comic where I'm doing not just pencils, but my own writing, inks, colours and lettering, I'm not really slow at all. Half the time when I actually talk to these amazingly fast artists, they're actually not, they just don't sleep enough, or never socialise with anyone, or never cook fresh food. A bunch of people I know who prided themselves on speed of output in their twenties are barely able to draw any more now we're in our thirties because they have terrible RSI in their wrists. I'm actually faster in my thirties than I was in my twenties, producing more pages at a higher quality level because I can apply all the practice and short cuts I've learned, but haven't destroyed my body like a lot of my art friends did. I sleep 7-8 hours a night, I mostly eat home cooked meals, I take exercise and rest breaks and I produce pages at a steady, consistent rate to a solid level of quality and that's fine for me.
If you want to speed things up, try looking at threads like these for some sneaky tips:
But be kind to yourself. Very few people are actually significantly faster at drawing, and most who seem that way either have really efficient pipelines and lots of hacks and shortcuts for producing their art, or they're willing to make the time even if it harms quality of life.