Hi!! I am no expert but I have bred my mini lop 4 times and all successful healthy babies and mamma. I suggest if you are giving her pellets to give it to her unlimited as she will be needing plenty energy to be pregnant and make milk. Also lots of fresh veggies, make sure you know which ones are good for rabbits and which aren't. Another thing I like to do once she has just had her babies I give Alfalfa hay along with Timothy hay, this is to give some added calcium. I hope this helped, reach out if you need any other help.