nah - until you update to alert them again to your presence, theyll mostly forget youre there until you return
that said, you might get a flush of unsubs when you return, people realising theyve lost touch with your series
ive seen fans stick with a series after a reboot before, but when you do that you do give people an opportunity to leave, and some will take it. in some ways thats a good thing though; a few engaged readers is far more valuable (emotionally and algorithmically) than lots of disengaged readers.
dont make final paintings / drawings of things you might have to cut - if you look at it like an animated movie, all the editing decisions come at the storyboarding phase; once stuff is fully animated and rendered, it very rarely gets cut from the final production bc too much time has been put into it, so they edit at the beginning. in the same way, editing of comics should be done at the sketch stage, and sketching as you write will make for stronger visual narratives.
also, youll always have to throw away some chapters or panels that you dont need - another reason not to put too much heart or effort into anything until its confirmed going into the final product.
i go kinda like this:
1: plot plan, zoomed out to the events alone and sectioned into chapters.
2: zoom in on chapter (x), write out the events in more detail and break into scenes - some concept sketching may occur, this is where the most editing takes place for me
3: break chapter into a page by page plan of events, also a place for lots of editing
4: turn that page by page into... pages. this is where i actually start sketching page layouts and poses. by this point ive workshopped the content and structure of the chapter several times and know what the function of each page is in the narrative, so big edits are rarely required. a lot of small edits to action or dialogue happen at this phase
5: final pages - at this stage theres no backsies, i only allow myself 2 revisions maximum per batch
6: repeat the process - zoom back out to plot plan and tweak further chapters to meet the changes ive made. if i regret a decision ive made in a past chapter (as i do... often...) i can decide to A: retcon it, fuck continuity or B: let it slide as part of the learning process. i usually go for a bit of both, depending on the error