retic size question

[cpt_retic]

I have a 2 year old male that is just shy of 9' and a 1 year old female that is 6.5' Is this a good size for there age? Cause' I've heard retics can grow 12' in there first year , I think i feed them well enough (once a week) I keep seeing alot of other large retics that people have but not too many people say the age.

I feed my larger tic 2 , 3lb rabbits a week and the smaller one 2 large rats a week. How does everyone keep to there feeding requirments?
I just want to make sure I'm feeding enough.