When you feel comfortable with knowing how much to feed, then start combining.
It's important not to forget to miss one day a week of feeding.
This allows beneficial bacteria in bio filter to play catch up as well as allowing fishes systems to purge.
I myself as a display and breeder, keeper practice controlling my fishes belly mass to thin down one week then increase, (but not round) the next,,,, and so on.
Depending on your house hold,, only you should have access to the fish food.... Hah ha... Other wise you might get what I call phantom feeding..... The misus... The kids.... They don't understand....