I just finished Chapter 2, so I haven't done this enough times to make any solid statements but I'll tell you what I can.
I posted the last page of ch 1 on August 9th last year. Then, on Sept 16th, with a little extra episode inbetween. I kinda cheated here tho, since I had chapter 1 already drawn before I started posting it x'D I was lazy and didn't have much free time at the time, so it took me a looong while before I even started sketching. If I recall correctly tho, I did most of the sketching in that hiatus month :3c (sooo around 20 pages in a month).
I was in no hurry because not many people were reading the comic anyway x'D I was pretty discouraged at the time. I was excited, yes, but I didn't have anything to lose if it took me a bit. I had more or less the same engagement as I did before the hiatus when I got back to posting pages.
Shortly after I started posting chapter two tho (after the hiatus) I got into the "new and noteworthy" section in the front page tho, and I gained a lot of subs there c: that was super neat (for reference, I had around... 9 subs? Or so before that. I gained around 50 subs then, it was a big help but one you can't count on, since it's kind of a matter of luck).
Atm, I finished ch 3 on March 26th, but I haven't been able to even start sketching yet :C college is being even harder than usual now that we have to stay home and it's been hard to do much else. I really don't want the hiatus to take much longer than a month tho, so we'll see what I can do x'D
As a final note regarding subs (even tho it's not the topic of the thread) I gotta say that the subs I got from interacting with other creators/mutuals in the forums and all that are the best thing that could have happened to me and the comic as a whole. They're the ones that give me that final boost of determination I need some weeks to finish the pages c: Try to have as much fun as you can and interact with peers whose work you find cool, you'll meet amazing people along the way <3