CV-17 can use up all the airwing of CV-16 when the latter is in maintenance, & when CV-17 is the one that is docked the type 001 will use the same airwing.
Both ships and planes have to have a considerable time off. For planes it might be 20-40% of the time that they're unavailable. For conventional carriers it might be 25%. The rest of the time they ARE available but of course, not necessarily on a mission. Planes don't fly half the time nor do carriers sail out half the time they're available.
So if one tries to tie the plane's maintenance schedule with the maintenance schedule of one of the carriers, it will necessarily mean planes would NOT be available for the second carrier.
In fact, a good part of world's navies does have more carrier capable planes than the entire combined carrying capacity of their carriers.
US: 11 carriers, some 580 planes capacity. Total carrier capable combat planes: 950+
France: 1 carrier, some 28 planes capacity. Total planes: 42
Russia: 1 carrier, some 24 planes capacity. Total planes: ~36 (before ones lost in accidents)
UK in the Cold war: 3 carriers, capacity variable, depending on mission: 36-54. Total planes: 57 FRS1 (no FRS2, no strike harriers, no indian bound harriers)
So I'd venture out to say that once PLANAF does get to a point where it wants to be, training wise and quality wise (both of pilots and airplanes) we will indeed see a rather fast ramp up to significant number of operational planes. Which, for first 2 carriers, might be over 50 planes. For first three carriers, it might be over 90 planes. But it certainly won't happen tomorrow. We might have to wait until 2025 or so until we see that.