Hey Ed.
Pic 1 is too much P.....Try giving some extra N, say maybe a tsp of Blood meal sprinkled about the top of the soil, maybe scuff it in a little ......More on fast organic N sources in a bit.
The new soil is a good choice......Dr. E used to or still does make a soil they called POTting soil...Black bag gray or white lettering..
YEAH sir, Still make it - They did change the "name" to "HOME GROWN Premium Soil".
Whatcha got there should last 30 days or so with no feeding needed.
Plant 2 (second pic) looks fine so far and should run ok.....If the yellowing continues and climes up the plant. Same thing for some N..
Normally, I'm not a blood meal fan, so if'n you would rather not use BM, look for a high N bat guano.....Like Mexican or ask your local nutrient shop to point you to an organic source for N with little to no P..
Want to cheat the shop. Those pesky stinging nettles cut, dried or fresh is a good N source brewed into a tea or mixed in at soil building time..
Piss in a container (outside) and add 8 times the volume in water. Let this stand 3 days and water lightly with that... Pee is a good source for fast acting N... Usually the NPK is like 10-1-2....It will take a little time for the living soil to work it into the plant.....
I might just hit 2 with a little N and watch it close...