First grow WW photo strategy question

First grow very small tent DWC. Due to failure to seedling I have 2 of the same strain 2 weeks apart. I have been shorting the older one on nuteds and keeping VDP low to help seedling but the older one is now showing a little stress. Pictures
Should I just split my lights up for a while and get the older one on it or just hold till they get closer? Do not want to damage older plant.

Grow em both in the same space, the smaller one may catch up, if it doesn’t, oh well, you’re overthinking it.

Keep them both as healthy as possible. Use lst to keep them the same height.

Biggest problem is the lights. I do have 2 led 150 watt units but in a very small tent they share a footprint. Only thing I see working is a divider panel to shadow the little one. I can tell from research the bigger one can tolerate veg light the little one was trying to curl a tip so i dropped it 10% Overnight the curl stopped.

I would hold off on a divider. The seedling will acclimate to the increased light level and then take off.
I've had to replace a plant in a grow that was almost 4 weeks old.
The replacement, although smaller, did just fine.

The seedling will catch up, no need for dividers. Bend the bigger plants branches down some to lower the height.

Update
Put full strength veg jacks in bucket one and full strength veg seed provider. Both with hydrogaurd. Lights at 9500 lumens. Both plants love it. Perhaps older plant will get topped twice.

Now question. Bucket one has a random burn? hole in one leaf. Roll with it or prune.

Older plant exploded with full nutes. Young one will not seem to fade the yellow is stretching but little else