This is also my 1st season breeeding (good luck to you) from what ive read and been told about 6 - 8 good locks and your good. Ive personally had my males lock with my females 4 times so far in a short period of time (2 1/2 weeks), since then both females have denied the boys twice in a row when introduced and are eating speratically. Im hoping they are preggo but like ive been told they life to confused us.
Definitely not gravid if still eating, keep trying to feed and breed them, but not as often as you were on the breeding front