You may want to look into intermittent fasting, which is a technical way of saying eating a later breakfast and earlier dinner without nibbling before breakfast or after dinner. I am not a healthcare provider but have been following this and my HA1c is down to 5.0. I am taking Berberine 500mg TID (stopped both Metformin and Farxiga under medical guidance). There are some great books by Dr Jason Fung - Diaberes Code and Life in the Fasting Land - and Satchin Panda PhD - The Circadian Diabetes Code. Dr Fung has several videos up on youtube that you may want to check out.
Wishing you great health!