IMHO I would not breed the female until she is a year old or full grown so that she will not be using nutrients that she needs for her own growth to produce eggs.
Some will produce a clutch without having been mated so its important that once the female is sexually mature to make sure she has a suitable place in her cage to dig to show you that she needs to lay eggs.
I would keep them separate until you mate them. If you have them together after they are sexually mature they will surely mate and produce eggs even if the female isn't full grown then.
To mate them, take the female and hold her outside the male's cage so they can see each other and watch to see their reactions.
If the female hisses, gapes, rocks back and forth, lunges at the male, turns dark, etc. then she is non-receptive so you should put her back in her cage and try again in a couple of weeks.
If she is calm, retains her paler colors, does not hiss or gape or lunge, etc. and does not inflate her body, then she is receptive...and if the male acts in a non-aggressive manner, they can be put together. I usually continue to watch them for a while after I put them together to make sure everything is okay.