Doc has me on a glyburide metformin combo; for type 2 diabetes; (caused by years of high carb eating)

Read that glyburide causes the body to secrete extra insulin; (apparently resulting in weight gain) but being on Paleo; my intent was to _reduce my body's production of insulin by eliminating carbs.
Im confused. The last thing I want to do is to icrease insulin; unless just a small increase is helpful for the body to rid itself of excess sugar...

Can anyone clarify?
Thanks