I am doing a tax return for a single mother who is claiming the exemption for her child in   2020.  Prior years the father claimed the child.  So in 2020 he received the stimulus payments for himself and the child.

When I am doing the mother's tax return now, and because the mother is claiming the child, the Recovery Rebate Credit is showing as $1,700 for EIP1 and $1200 for EIP2, however she only received $1,200 for EIP1 and $600 for EIP2.  thus giving her the difference in a refund. 

How do I tell the system that the EIP credits were already received for the child by the father?