6 weeks old white widow,, question

Okay, let the soil dry out and between now and then you will see how it reacts, or if it reacts, to the feeding. And like I said earlier wait at least ten days to feed again.

alright, ill see how it goes, anyway, should I cut off the yellow leaf? or it may turn green again

Give the leaf a very light tug and if it easily comes off then okay, otherwise just let it be.