The 5 days guideline is not done by everyone just like the so called 10% or 15% rule, I feed my animals once a week and no more than that regardless or size and age, some I actually even feed less.
Does not stop me from having 4000 grams animals it all come in time, sadly a lot of people want them big as fast as possible and in reality overfeeding and increase in fatty liver issues is a real problem.
Pay attention to your snake feed small prey weekly and your snake will thank you for it in the long run.