A few breeding questions

Hello I'm fairly new haven't been here for long tbh

I was wondering if anybody could help me out with a few things

1) when is the crested gecko breeding season

2)do they have to be a specific size, I no how much they should weigh, what length do they have to be both of me geckos are 6.2 inch long

Yh I think that's it oh yes one more

3) both my cresties are living together, boy and girl, they have done since babies so if I were to split them then replace them together would my male think its a new female and try to mate with her or would he mate with her now while there both living together and mate when he's ready to with her

XcrestieloveX