I am a new Metformin user (850mg twice daily). My glucose level has been averaging 250 in the morning - before breakfast. I took the first pill last night but didn't notice any change on the meter this morning. When or how long does it take for Met to start lowering my blood sugar level? Does it have to build up in my system? Any insight will be appreciated.

I have spent quite a few hours this week researching how to control "the enemy"... type 2 diabetes.
Thanks.