We used LLATL this year and completed a lesson per week. The lessons were divided into 5 sections, so we completed one section of the lesson each day. It seems like there were 28 or 32 lessons for the year, so you have a bit of leeway when you need to shorten your schooldays or they need more time on a lesson.
The book studies were set up differently and I think it discussed different ways of working through them in the beginning of the teacher’s manual. I assigned them a chapter each day (in addition to their normal lesson). When they finished the book, the went through the book study in place of their normal LLATL section.
I did skip some parts of the lessons, especially those I felt were just busy-work. This was more for the red book…I didn’t skip much in the orange and tan books. You DC should be able to do much of the lessons on their own. I did help my 4th grader a bit, but my 7th grader was fine for the most part. I only checked her work and helped a few times with writing or grammar.