does the amount appear in box 10 of your W-2? it should. that gets entered nowhere else. what you enter for dependent care expenses is what you paid the provider - the persons or organizations that took care of him while you worked. should be at least the $461 you were reimbursed. The exception is if you had money left in the FSA a/c at the end of 2018 that you used to pay expenses during the grace period in 2019. that amount goes on line 13 of 2441.
