We are using 7/6 this year, and to break things up I have my son do his facts sheets in the morning. Then we do LA and reading. After lunch we do his math lesson and complete the warm-up orally when his lesson is complete. I hope you find a way to make it work for your son. It really is a great program.
Also, we do his practice problems together on the board.
ETA: We also use the mixed review answer sheet. So basically the only writing he has is one worksheet front and back, other than his facts, which by the time we do his lesson is no longer on his radar. This may not work for you, but really helps for us. It just seems to keep it from feeling so overwhelming.