Still my first week here but I have a personal series I already been working on for awhile so I been able to upload about 4 pages per day so far. But I uploaded 14 the first day to give anyone who checks it out enough material to read on. However, since I already made a lot of pages I felt like I could've uploaded in 5 page episodes to avoid clutter rather than 1 at a time.
Once the uploads gets near my current page, I'll probably switch to 1 a day or less. I think part of getting a lot of subs or not is if the initial pages' art appeals to them or it already sets a story theme they like. Unfortunately for my manga, it's planned to be super long so it starts out much slower than most series. Also I'm pretty much practicing to draw better through making it so my pages look unrefined lol.
I think you should do what you prefer and are comfortable with first and foremost. But it shouldn't hurt to experiment! Goodluck.
My series: https://tapastic.com/series/Faith-Academy