Log File size growing too big need to truncate in SQL Server 2012 with AlwayON Feature

Hello,

I want to truncate my sharepoint config database and WSS_Logging database logs the size of sharepoint_config database is growing at a pace of ~10GB every week. I have scheduled a weekly full backup. Current .ldf file size is 113GB.

I am using SQL server 2012 with Always On High Availability feature. I am not able to set the recovery mode from Full to Simple as it gives me message that mirroring is running on both server.

Please suggest in my case to reduce the log file what I need to do.

Thanks & Regards,

Paresh Jain