Small Lighting error

Hey guys. First time indoor grower here. So just about all of my babies are in to their 3rd week of vegging. look great. but. last night we started running 3 lights instead of 2. Forgetting that our timer only had two outlets. Heres my question. I just turned off the 3rd light manually but it has been running for 3 out of the 6 hours i have scheduled for darkness. The third light as the least amount of plants and the youngest ones under it. So. Do you think everything should be ok? or should i just turned them all back on right now and go back to the normal schedule tomorrow? appreciate the help! Thanks

It will be fine. Flowering is where you dont want to screw up.

Thanks. Thats what i figured..just needed some reassurance for my peace of mind!