I am quite sure people do different things.
I wouldnt worry about a waterchange, – I have often done it, and then afterwards realised there were eggs in the cave, or very young fry.
The thing is, – when I do a waterchange, I dont clean or any such thing, – I do a small waterchange only, – maybe only 20 procent or so. I leave everything as it is in the tank, leaves etc.
Of course, its good to be very careful and not stir the water too much.
Another thing which could be said, is also, – that depending on what kind of tank it is, – perhaps it isnt really nessesary to do a water change ?
I dont do waterchanges every week at all, – in particular not in tanks with few fish, theres really not that big a need, in my opinion. So, depending on the situation in your tank, you could also choose to leave the water change a little bit.