Awesome lock! Just keep at it! Like others said, the breeding season is LONG. Just look at the scale of Markus Jaynes timeline and you should see the average rate of how long you can expect eggs. Since your breeding between natural seasons, I'm assuming you are cooling them at night? Its not a must from what I understand, but may be beneficial? Just a thought.

I cooled last year in october and bred not long after that(just before november) for a few months, doing 3 days in 3 days out for 4 weeks than he got about 8-10 days to rest. 7 months later, I found 7 eggs. The male stopped being introduced around feb/march. I got eggs in July. It was a big surprize. Wasnt expecting it at all. I thot she didnt take.