After renaming a database the subscription ( logical replication)stay sticky to the old database (master)

Hello,
I restored the production database to staging environment, then dropped the publication on old database, dropped the
subscriptionon the slave. 
I have to rename the old database in order to keep an old version of data. When I re-add the subscription logical
replication,pointing to the new database, the slave still want to synchronize to the old database ( renamed) and the
accumulatedWAL files are crashing the filesystem.  
How can I handle the problem ?
Thank you