if its worth it give it a little less love they can bounce back it may take a bit so if your on a short schedule you might want to pop an extra seed as insurance
less love and more focus on all the controlled parts of the room take it back to the basics
is my soil proper (not dirt) is my water usuable?
can ventilation and temperature/ humidity be better controlled
is the light at the proper height and are my genetics good
you can chase a lot of easy to fix issues by overlooking small things like this, so if you control all these things you dont get sent on a wild goose chase
i always will use good soil, if the plant has any deficiencies its most likely root bound and i transplant instead of feeding. once in the final pot and usually after 3-5 weeks which is right around flip time for my size grow, ill start to feed. Your soil should do most of the work you just need to take care of the rest. too much love can kill stuff
good luck brother and stop adding anything if you have good soil and not dirt.