There are several options in breeding chinchillas here are some of the options aswell as tips on when to seperate the babies from their parents
Breeding
Basic Rules of Breeding Chinchillas
1) Never breed from rescued Chinchillas
2) Never breed from Pet Shop bought chinchillas that you do not know the history of
3) Never breed a Black Velvet with another Black Velvet (this can result in the lethal factor)
4) Never breed a White with another White (this can result in the lethal factor)