I'm not sure if I can give you actual tips as I'm a beginner and still trying to sort that out too.
But because I just went through that kind of worry, I can tell you what were my conclusions.
I have the same time issues. I thought I could manage 52 pages a year to post one a week, but in the facts, even by keeping a very busy drawing schedule, I manage 40 pages a year at about 7-8 panels per page.
My first chapter is 33 pages (only 20 published for now) and I started to worry a lot about pacing because at the end of chapter 1, I barely even showed what genre the story will be. I tagged it as fantasy, but there is very little fantasy at this point. Secondary genres would be adventure, no adventure in Chap 1. Maybe romance, no romance in Chap 1. I would say Chap 1, if anything, is drama, but that's really not the genre I want to go to.
So I started wondering about the pacing and especially, if I was not taking too much time to introduce my story. Then I thought of that:
That is totally what makes my pacing slow at the beginning. And it's something I like when I read stories. It's not necessary, but I do appreciate when it's there. So in itself, no problem for me with that!
Then I went back to my comic and realized that in 33 pages, I introduced a different universe, my 4 main protagonists (not a the same time), including flashback to earlier years, several secondary characters, and, by the end of Chap 1, all the main plots elements that will drive the story are suggested.
Well, that does not look like slow pacing finally.
All that just to tell you that I managed to make the difference between the slow pace due to time constraints and the potential slow pace of the story by going back to the story and looking at the concentrations of things happening there. I don't know if you ever read your own story from beginning to end, but I would suggest you to do it (if possible after taking a break from the comic, for eg. if you were too busy for a few days to draw), and read it slowly while noting everything that happen and that is important in a way or another to the future of the story. You may be able to find pages/panels that are too much on the filler side (and know how to avoid them later), or at the contrary realize that your comic is already packed with important things!
I can read your comic if you give me the link, although as I said that won't be very skilled feedback.