The transaction do not support replace-by-fee, the second transaction has already been dropped from some mempool but that does not mean it is not still included on some other mempool. The first transaction has been rebrocasted which should be automatically done.

The thing is, if he sent the bitcoin to an exchange, there is nothing he can do. But, if he has the seed phrase or private key to the wallet, he can import it on electrum and use CPFP.

Can you tell us if you have the seed phrase or the private key to the wallet you send the bitcoin from? If you have it, or if the receiver has it, all needed to be done if for the receiver to send the whole unconfirmed bitcoin to another address on his wallet. But, a fee that will be able to confirmed both the parent and child transactions at ones.

This transaction consists of 6 inputs and 1 output. Make sure the child transaction fee should be enough for 7 inputs and 2 outputs and substract the fee paid before from it

This transaction consist of 1 input and 1 output. Make sure the child transaction consist of fee that will confirm 2 inputs and 2 outputs early.