The bitcoin mempool is CRAZY right now. Sent out a transaction via my freebitco.in wallet, feels like it may pend till next week if not longer given it only was sent with a fee at ~54 sat/B. Is there any way I could pay freebitco.in to do replace-by-fee (RBF) or some other acceleration method? I'm not the recipient, so I can't do child-pays-for-parent (CPFP).

Anything? Thanks.