Is fine grained control over backup schedule possible?

I'm on Android and use automatic backups. At the moment it runs daily starting at night. I use syncthing to sync the backups to my NAS. It works well.

Since my chat history almost weigh in at 10 GB I'd like to decrease the frequency to lessen the burden on the NAND in my phone.

Is it possible to automatically make backups less often than daily?