It’s been said already but realistic means very different things to everybody!
I will preface this with saying that comics are my full time job but I usually do around 6-8 pages minimum weekly. I also draw traditionally at a smaller size to help increase speed. I can do more but I’m in the middle of non-comics related projects.
I tried this method before of fitting four pages to one B4 sized page to write, draw, ink, and color four pages everyday for a month and I got really comfortable with the format so I continue to do that for some of my projects. For most of my work I draw larger though.
I usually TRY to do one or two of these pages a week along with full colors but since I work on multiple comics I usually only get one page done but that’s four pages in one batch and it allows me a lot more time to work on more stuff!
Finding ways to quicken and simplify the workload is extremely important. For me it’s drawing traditionally so that I have to compromise with my mistakes and move on instead of fixating and hitting the undo button every five minutes and also simplifying my style as much as I feel comfortable with.