Hello , Guys here is my first post , with this question:

I have 3 boas i feed them rats every 2 weeks , these are their measurements

BCI Male Costa Rican boa - 5 years - 3000 grams - 180 cm.
BCI Male albino kahl - 2 years and 8 months - 2610 grams - 160 cm.
BCI Female albino kahl - 2 years and 8 months - 1900 grams - 140 cm.

I have been reading and noticed that central American boas are not really big , but my concern is with my albinos I received the about 1 year and a half weighting 300-400 grams I feed them weekly during 1 year and got them up to size a bit , but I still think that they are a little bit small, the past 8 months I feed them every 2 weeks , but I have noticed that the grow have been reduced.
The animals are looking great and healthy , but my questions are:
Are these measurements “Normal” or Do you have any recommendation to get them a little more weigh (to be honest I think they are a bit smaller than they should jeje).


Thanks in advanced.