My tangerine dream girl is not getting pregnant!!

I have tangerine dream girl, tiffany blue girl, white widow girl, and strawberry cheesecake girl. I pollinated them with the pollen of a beautiful strawberry cheesecake boy. <br><br>I'm assuming its because she's so young, but shouldn't she be producing seeds by now? All the others are. She's already 2 months into flowering, and I'm worried that she won't produce any of her seeds on time. <br><br>Also, I've read that it's not good to keep them on 12/12 for 3 months, so how should I go about that? Should I shorten the days a little so that they produce seed buds at the same time?<br><br>Advice would be greatly appreciated!