When breeding rabbits its best to put the female in the male's cage to avoid female agression. Usually one "session" is enough and it should only last a few minutes, but you may want to try it 2 or 3 times over the course of a day or two to make sure. If you see the male mount the female take her out after he has fallen off. Repeated matings will stress the female and may cause her to miscarriage. The gestation period is 28 days but there is a bit of variation so 26 to 30 days is normal. After the female is bred put her in her own cage and offer her normal feeding for about two weeks. At this time offer alfalfa hay to give her extra protein. The reason for waiting is that overweight does can have trouble giving birth. Place a clean nestbox in the cage five days before she is expected to give birth, any earlier may cause her to use it as a litter box. Straw works best as nesting material but any dry and absorbant material will work, she will add her own fur so the nest should be plenty warm since its summer. I know its hard to resist checking on the babies but it is best not to touch them ubtil they are at least a week old. Reaching into the nestbox stresses the female and may cause her to eat her own babies. Does only feed their kits a few times a day (maybe only once) this is normal so don't get freaked out if you think she isn't feeding them. When she does feed it will probably be at night. Does also only go in the nest box to nurse so you won't really see her in there that much. I wish you the best!