I'm by no means an expert, but realize the importance of water changes to maintain healthy growth. The frequency of water changes may change to different people's availability, their expectations on fish growth, or breeding condition.
I do not need to vacuum left over food as there is never any, and hence the reason my feeds are little but often. All the maintenance is done during water changes. That is wiping down the glass from interior and exterior, vacuuming poop and working through sand for any dirt, and occasional flushing out the canister filter with water being emptied out, so all the rest of the time the fish are left in peace to eat, poop and be merry
As l mentioned previously though, the frequency of my water changing schedule may change as they get bigger