Logical replication slots stuck in catchup on a very large table

we have couple Postgres RDS connectors and we face sometimes the same error with the replication slot being active

ERROR: could not create replication slot sub1: ERROR: all ERROR: replication origin with OID 1 is already active for PID 5566

replication slot postgres active for PID 3006 23:56: MSK ERROR: replication slot japan_replica is active for PID 3006 2022-

replication slot does not exist Initial Synchronization Worker: Synchronizes initialexisting data from the publisher by creating a temporary replication slot and running a