So, what I do is try to do a little bit extra each day. If I'm working with my 12 yo, I try to do at least 2 R&S lessons--because they are "so short", and that math lesson was pretty short today, let's do another one, we are behind in WWTB, so let's do 3 days worth today, let's do several dictations today, and so on. She can handle the work to an extent, but it takes more time than I realize and then it is crunch time with the others. Some days I might not get to a younger one because my time is spent.
Yesterday, I tried to just stick to the guide and the recommendations for lessons, pages done, etc. with all of them. I was thinking about MomtoJGJE and how she says they clip right on through and she doesn't let things drag out.

Anyway, it went so much better. I guess what I need to is just be okay with where they are and keep plugging along. I want to be further along in Bigger for my 10 yo, but we aren't, so I need to be okay with that. I want to be further along with my CtC girl in English and math and WWTB, but she's not and I need to be okay with that.
