Awe. so sorry..you'll get another chance. good luck with the BBS. you'll probably try a lot of things. all i know in my 2 yrs.your very ponies came ,to me at 1 day old,and i didn't know better ,so i Fed them rotifers for weeks,I think it was at least 12 days before i introduced BBS,well long story made short. i had 8 live.amazingly 4 female 4 male.
now after that batch,it was harder to keep them alive .i think the BBS had allot to do with there death.but there your babies now ..you'll get it right.and BIG's babies aren't small,they might be ready for BBS right away.
GOOD LUCK , with next batch.
Ruth