Wal sender process not moving past wait_event_type: IO and wait_event: WALRead

Hi Postgres team,
We are facing an issue where we are unable to read data from a logical
replication slot after a certain period of time. Every time after dropping
the slot, it works fine for a few days and then again we are not able to
read from the slot(we have been unable to find any queries that might be
causing this issue). Each time the walsender process is getting stuck
wait event type: IO and wait_event: WALRead. We've tried this with
pgoutput, test_decoding and wal2json, with all three we have faced
same issue.
Is there a way to be able to read the data from the same slot?

result for select * from pg_stat_activity:
datid
datname
pid
usesysid
usename
application_name
client_addr
client_hostname
client_port
backend_start
xact_start
query_start
state_change
wait_event_type
wait_event
state
backend_xid
backend_xmin
query
backend_type
16404
*******
115407
2354767601
*****
PostgreSQL JDBC Driver
<binary>
-
36322
1645710936593
-
-
1645710936941
IO
WALRead
active
-
-
-
walsender

1645710936593
-
-
1645710936941
IO
WALRead
active
-
-
-
walsender
--
*Regards, *
*Anurag Shrivastava,*
*Software Development Engineer, Hevo data*