Probably too late now, but may help someone else if they filed an extension or next year.
i had the same problem and while the some suggested clearing and starting over, i figured i'd try something else first before starting over and below is what i did that worked for me.
1. I went to tax tools and deleted the form (this should have been enough by itself but obviously wasn't)
2. I also removed the dependent form for the child linked to the "dependent child care" (you may need to remove more than one child/dependent
3. i exit out of the tax tools and went to review my taxes to see if the 2441 request was still there and it was gone.
4. i re-added the child as a dependent and answered no when i got to the dependent care section and everything was ok afterwards.
hope that helps.
tldr;
1. remove the form 2441
2. remove the child linked to form 2441 dependent form.
3. review taxes to confirm 2441 is gone
4. re-add child as a dependent.
