1 month old plants. Should I start the flowering stage, or wait?

I used 707 soil. It’s around 75 degrees inside. The light I have it running for 18 hours and then off for 6hrs. I haven’t fed them anything yet. The humidity is around 55%.
They are looking pretty good and I’m new to growing so I don’t really know when to transfer into the flowering stage. I’ve been looking around and it says anywhere from 4-8 weeks is when you can start the flowering stage. Someone help.
 

Attachments

Top