Harvesting with multiple stages of development

HI folks,

I currently have 5 plants with multiple stages of development, not too far apart though.

The tops of of three plants have about 50/60 % brown hairs and hope to have about 80% soon-ish.

My question is if I harvest the tops when they're ready, is it safe to leave the remaining plant to develop further? My thought was to lower my lights/raise the plants closer to the lights.

What do you guys think?

Hoping to have a better handle on things for my next grow, just making this the best as possible.

Thanks,
Coop
 
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