Careful with your words. A lot of people who follow this advice end up starving their snakes and neglecting them out of hoping their snake doesn't grow big. What you should do is feed it normally at weekly or biweekly intervals. If you don't want a snake that gets huge, then go and get a ball python or boa constrictor, but if you have a Burm, don't expect anything short of giant.
OP, I hope you know about all the laws (federal and local) in regards to Burms.