this is my 1st breeding year, I am pairing a male cinny to 2 LARGE females, 3 days on 3 days off schedule since halloween.

I have been getting locks consistently for the past 6 weeks (every time). However the last two rotations, one of the large females shows no more interest in the male.......Is this normal, is she finished? possibly ovulating?
The other pair is still locking up strong.