As long as you are:
Feeding rodents 1-1.5 times the girth of the snake
Have a cage with approximately 1 square foot of floor space per foot of snake
Have a hot side between 87-90 degrees
A cool side between 72-80 degrees
A place to perch
A good hide (preferably 2)
And you don't handle the snake all the time it's really just up to the snake. Maybe try offering every other week.
The most important thing is to regularly weigh your snake to track any weight loss due to not eating. If he loses a significant amount of weight, you might want to consider assist feeding.