I’ve got a doe bred for the first time and a doe who has bred before. They had litters about a week apart. The new momma isn’t producing enough milk. I did a trial yesterday adding one kit from the low lactating litter to see if the other doe would accept. She did. There r now 8 kits with well lactating doe. How many more can I safely add? I’m planning to begin hand feeding the rest. The other non lactating litter has 8 more