Reverse early flowering plant

I have 6 plants with 4 in a hydroponics system and just recently I noticed 3 of my plants started growing tiny flowers. They are only a few inches tall and I have kept them under 18/6 lighting. Also they arent autoflowers so I dont understand what happened or what to do.
Can I revert them?
I read that you can revert them with 24/0 light but it will take a few weeks, so is there a shorter way?
Also has anyone else experienced this problem?

Your timer may be fucked up. Anything above 18 hours of daylight should be enough to keep them in veg. Yes, you can re-veg. I would toss them under 24/0 for a couple weeks. It will stress them a bit, but they will bounce back.

I don't think there is a shorter way.

Got any pics?

@KryptoBud just took some, sorry its in portrait

All blue LED? What kind of light is that?

@Dumme its a vispar 450 watt full spectrum with just the veg mode on. I dont know the exact colors that are in it