What to do with the young bottom flowers?!?

Almost time to harvest : bottom flowers, suggestions?!?

That plant still has at lease 30-45 days left. Let it grow.

What do these yellow leaves mean? Starting to harvest or lack of nutrients?

Burnt tips?

You gonna get a lot of different answers to this ... but, IMO:
Bottom flowers are light as a popcorn fart and contribute little to over all weight. I like to take off everything lower so the plant can 'spend' its energy where it counts ... top cola's.
Also, allows air to circulate better, bugs harder to hide ... etc.

I run a scrog so, everything under the net is smooth as a baby's butt.

And, yea, back up on the feed a bit. Go down to 600 to 800 ppm for a week or so. Put a little bit of Cleerex in every feeding - it washes salts out. In future keep an eye peeled for 'clawing' of the leaves and burned tips, and back off feed earlier.

My 2 ¢ .... I would either .... drop those reflector bulbs closer to side plants or put plants on risers to be CLOSER .
Your light height is what is causing most of the smaller bud sets. That lower popcorn is the DRAG on the plant .

Im not trying to be funny but they have “ at least “ a month to go.
You can bump up the flowers by surrounding plants with more light .... even if it’s more clamp lighting.

Good2know. I appreciate the knowledge and good advice