For a T2 (which I presume you are) eating triggers an insulin response.
Most classic T2's produce way too much insulin which is less effective because of insulin resistance.
By eating lots of small meals and snacks during the day you are constantly triggering even more insulin production.
Eating once or twice a day without snacks allows the pancreas to rest and the insulin to do its job more effectively (lowering blood sugar).
If you are constantly introducing more glucose into your body by eating carbs then you are constantly triggering the pancreas to produce more and more insulin making the problem worse.
Hence its best to eat once or twice a day with minimal carbohydrate. This has multiple benefits
1. Not triggering insulin
2,. Allowing the body to burn up excess glucose for fuel
3. Over time turning the body on to burning fat for fuel (providing carb intake is low enough)
4. This leads to weight loss and more efficient functioning
5. This can assist in putting T2 into remission.
This is why I believe intermittent fasting along with ultra low carb is a major benefit for T2's.
If you eat enough fat and protein in your main meals then snacking per se should be come less attractive.. fat keeps you full and provides energy.