How did you get your A1c in the 6 range?

I was diagnosed with T1D in 2004 (age 4). My A1c has always been on the higher side. I am finally down to a 7.0 and have been exactly at that for the last two appointments. My endocrinologist says I’m doing great, however I want to lower my A1c further. I started using a CGM last month and am hoping it will help. My next appointment is in March.