RDS is running out of storage fast, how can I solve this problem?

I use RDS and I look at my POSTGRES size via l + and I find that it uses 154 GB of disk space. However, when I look at my StorageSpace stats in RDS, they indicate that I am using: 210 GB. I am trying to figure out where the unaccounted 56 GB comes from? I found that 16 GB of this are log files. Can it be paradoxical and my WAL takes up a lot of space (I've recently learned that synchronization does not replicate at the moment). Any other idea of ​​what this can be?