hi, i have 2 females which a bit small for they're age
one is a pastel female which is about 500 grams right now, and she's 1.5 years old
the 2nd one is an albino female which is about 400 grams, 1.2 yeard old
i want to get them as close as i can to 1500 grams untill next year season
i feed them once a week (though the pastel female doesn't always eat) with a small rat
do i need to change anything? feed twice a week or something?

Noam