Basically your plants should be ready to flower at 8 weeks meaning they are mature. But it is possible I guess that they are not mature yet meaning No sex and no flowering. But they look nice!!!

somtimes you wont see flowers untill 2 weeks in. Have you seen any preflowers? I would look for some of those. If your shure they should be flowering I would double check light leaks. Then tripple check... Its a science somtimes...

just my 2 cents ...

they look really nice so I would be patient.

good luck

kd