My advice is not to do more water changes, it's to stop keeping fish.
Everyone here is giving you advice on when and how to take car of your fish. You obviously don't care. You dont need to be keeping fish. It's just not for some people. You're one of them.
I'm sorry if that sounds mean, but ehh..
If you're too lazy to take care of one tank with the light schedule (Yes I said light. your life isn't busy) that you have now, just drop it. Then you wont have to keep making excuses. Problem solved.