Keep spraying leaves too, since roots can not supply moisure or nutrients well yet.
As I grow nearly thousand of various veggie seedlings every year/ my friend and I run large plant swap for some years now every spring so this is what I am known for 😆, tomato /
Using spray bottle helps. Foliar feed fixes root insufficiency. Pinch of bone meal in the pot mixed well promotes good root growth, osmocote does the job keeping pot green.
Q