So for my comic (which was weekly -- with only a few exceptions -- for 2.5 years) my big secret was just being very honest with myself of what I could finish in a week, outside of work, outside of other things in my life. My style was very simplified and I limited my updates to 1 page. There was no color (for a long time I didn't have half-tones) and I just focused on making a comic.
sometimes we compare ourselves to teams making these webtoons that are 30-90+ panels an update and like...that isn't possible for one person who's just starting out. Even if they have a background in animation--you gotta do other work than your comic, youknow? the time just isn't there. And, if you're just starting out with comics you want to go easy on yourself, and give yourself a project that you can do in half the time it takes for your update schedule. You don't want to make pages so massive that they require all your time to finish.
I also did a few other things that helped a ton--I had a years worth of buffer before I started, 52 updates. This meant I fully understood how long a page took to create, I had plenty of time to rewrite my beginning if I so desired (most people do), and it also meant that if I had to take time to move to another city for a while, or if something bad happened, or I got really sick--I'd be good. And after the last few crazy years I used up all that buffer. It's gone now, so make a buffer.
You don't want to be spending time re-inventing the wheel and trying to figure out a new technique like how to shade stuff on a weekly deadline--you want to have already learned that stuff when you have it in your comic, so just making that buffer without the stress of a deadline is a great way to...get fast at your technique, and then embrace your pipeline and let that be your style until the comic is done (or until you feel you have enough time to give it a revamp, which I did a few times, but never a huge revamp)
Also, when you do a pipeline that is always the same for every page--you can start making actions and hotkeys to make your process even faster. Mine was so simple I didn't make many, but for my next I'm making a wholllle bunch because color comics are kind of a lot of steps that feel like busywork. Try and get your computer to do as much for you as you can.
The other thing that helped a lot is that my script was fully written and my concept art was totally done. That way I could just focus on the art.