Thanks a lot for the helpful answer.
If I understand your question, one of these two answers is response, but I'm not sure which: a) because my son turned 13, we didn't have enough later expenses in 2021 to match up with the rest of the year's deductions. And b) in 2020, we had a nanny (until the pandemic put an end to that), so there were more than enough expenses to match up to the 2020 box 10 dependent care benefits (not counting the expenses from later in the year that I had, until now, thought would match up with the benefits in the 2H 2020-1H 2021 plan year).
Thanks again @JohnB5677. Not the answer I was hoping for, but I appreciate the help.
