boas cohabitating with pythons

[Vypyrz]

So I have your average RTB, who is about 9 months old. He's three-ish feet long and about 2.5kg. I also have two ball pythons, a male and a female, who are now almost two years old. The male is a little less than 2kg, and the female is right about as big as the boa...
...The boa is eating twice a week, and the pythons are eating once a week.

What are you feeding the boa? Twice a week is a little much. I suggest a 7-10 day feeding schedule. 2500 grams seems a little over weight for a 3 foot long snake....