Postgres 14 WAL FILE cannot change min wal size(in WAL DIRECTORY) after changing propperties min_wal_size max_wal_size

I'm completely new in Postgres optimization. I was reading a lot about checkpoint and WAL files. I found a query to examine the ratio of checkpoints time to requested (exceeded WAL max size)

SELECT checkpoints_timed, checkpoints_req
FROM pg_stat_bgwriter;

|checkpoints_timed | checkpoints_req | |-|-| |20496|53| In order to minimalize requested checkpoint I changed postgres configuration to:

checkpoint_timeout = 15min  
max_wal_size = 2GB  
min_wal_size = 200MB

But when I check WAL dir space is still 83MB (as the default value from configuration).

select sum(size)
from pg_ls_waldir();

Can anyone explain why WAL directory size is still ~83MB and not increasing to 200MB? I noted that changing parameters has triggered 2 checkpoints_req so I guess that max_wal_size is still 1GB?