The way I found my routine was just starting and see what pace I naturally worked in. I can't work weekly either, and found out I can make a page every other week. That's not at all optimal considering how things work on Tapas, but it's what works for me, and I still gain subcribers slowly, but steadily.
Yea, mistakes like that are soo annoying! But if it is small things, that's easy to fix, I just correct it quickly and update the page. If I find a mistake on a later update, I let it be, unless it's very important. Like a time I forgot to draw gloves on a character for a page.