You could keep going with the spine text, plus have one great family read aloud for that time period/subject going. Then dole out what is appropriate to each age/level, but be sure to look them over yourself with a bit of skimming or online research. Then you can have your independent reader narrate to you. Or you could read the books, too, and keep a buddy journal to jot down narrations and ideas or questions. For younger, newer readers, you could do partner reading together for practice and fun, as a slow release of of responsibility. You know, I’ll read a sentence or two, now you read a sentence or two, etc.
I’ve just had to get ok with not reading everything that my kids have to. I ask for a lot of narrations, and I make use of online resources so that I have some idea of what’s going on in the pieces that I cannot read myself. However, at the 8-12th grade level, I think it is really important to choose 1 -2 pieces a term to read together and have good discussions, narrations, and activities on.
Best wishes!