Lucy go with what you think is right for you and your snake, you will soon get into a routine that you know works best for you and Morse, if he is taking fuzzies and managing them then good, but I would wait 7 days at least if leaving a nice round bump.
I have two Kings and my albino is a very ferocious feeder, she seems hungry all the time, where as my black king I have to try all sorts to get him to eat, and my little trick is working at the momen, which I am glad about cause he went 5 months without food.
I prefer the larger food item rather than a few food items, and feeding less say every 10 days, if the snake can take 2 smaller items they can manage a bigger item IMO, where in my experience they have always managed the larger food item, my albino king isnt all that big and she was taking hoppers from a very small size, last week she took an adult mouse and this week she is wanting to have my fingers when just changing her water, she attacked me, mistook my fingers for food
I don't agree with power feeding but I do like a nice full snake with a large meal thats going to last till next feeding day whether it be 7 days or 10 days.
Take Bounce for instance, I know different sp and going to be much bigger than any colubrid, but yesterday she took a medium Rat and shes how old, 4 months, and the last two feeds she took adult mice, that rat should last her at least 3 weeks, but no doubt she will be ready in 10 days for another feed.
Good luck with Morse hope he continues to be a good feeder for you, my black king used to be a great feeder, he seemed to have a personality change over night, hes a lot slower, and never aggressive, where he used be a very skittish tail rattling beast....
Sorry for the long winded post lol....