Like many, this looks easier than it is. You have managed to tame much of the yellow stain but there are still traces of it on the baby's vest, the bedspread and the bedhead.
Not sure how you have been reducing it so far but more of the same should help.
Since the problem is in the yellow chan I converted to CYMK, used calculations on the Cyan and Magenta chan to create an new chan and copy/pasted it in place of the original yellow. Needs more work but that might be another approach