too much love is how most of us killed our plants in the beginning,
I suggest you stop checking PH, stop feeding and just let them grow....
water them when they start too droop and not before, feed them when the start going pale green.
let's be honest, u have already hurt the seedlings so this round will not be your best.
Instead take the time to learn to read ur plants and learn to clone.
in anycase I'm sure you will impress yourself if you just take your foot off the gas for a bit and the the engine idle