hello....if you don't mind my asking...how do you have anyone alive, much less bustling, in either VV1 or VV2?

i still have many alive in VV2 but none seem to breed though some are young enough. i have 5 girls set to breeding & 2 men but no luck for a long time now!

VV1 i have only 38 left but ALL way too old to breed and dying quite often.

is there a secret to keeping some alive?