When you got your last certificate, it should have scheduled a date two months afterward to renew it, just as it did this time.
If you forgot about that and just renewed it a little bit early that's no problem. Better safe than sorry! 
If your certificate was getting really close to expiring or expired on you and it seems like the automatic renewal thing didn't work like it should this time then we should look into that.
You can only turn it OFF with --notaskscheduler. It's on by default, and you showed me it was there in your task scheduler screenshot.
Everything else like the time the daily task runs and the days to wait to actually run the renewal are set in its configuration file, but @WouterTinus pointed out in another thread recently that changing these settings will only take effect the next time it is actually renewed.