You should reduce volume, but maintain “enough”. What “enough” is depends on how much you normally do, but I think cutting two hours out of a 16 hour plan during VO2max work is not going to be a problem at all.
E.g. if you do a couple of weekly four hour rides, you can cut back to one of those and maintain just fine.
All of your other work should be zone 2, and probably mid- to low-Z2 at that.