I’m in a similar boat – when I’m in the beginning of a training cycle I just go a little slower on the long hikes than I might normally. Sometimes I’ll hike the workout first, break for snack/lunch, and then drop the pace significantly the rest of the way up – or vice versa. I’ve also done what you mentioned and moved longer hikes to later in the cycle, but generally I like to take advantage when I have a full day available – regardless of where I’m at in the cycle.
I also don’t carry as much weight though – even in Z1 mileage carrying 30 pounds downhill definitely counts. In fact if I’m carrying weight for a portion as part of my plan, I’ll make sure most of it’s water so I can dump it out once the workout portion is done.
If you keep it to low-Z2 and Z1, more might really be better in this case.