Ok, what I do is primarily stick to that schedule but anything that is 8 sets I'll only do half of, then half of the other sets for the same muscle. Ok, so on lat pulldowns I'll do like 4 sets in front, 4 to the back, l will do like 3 sets of the chins as opposed to 6.
The chest and quads is too much in one day for me so I do a chest day to itself and I'm still dedicating a day for legs to itself. That's my biggest modification. It's simply.not a realistic approach for anyone with a job, family, etc. But I'd say if you cut the sets in half and keep the rest phases brief you will still get very good results. I'll take a day here and there off or good forbid I get set back a day