Your dapagliflozin only alters the sugar level by about 0.8% so the drugs, whilst they help, don't actually make a massive amount of difference. I sometimes think we expect more from them that we actually get.
I think we all have the talent to amaze ourselves, and our bodies don't always do what is expected. I can eat a load of carbs and my sugars go up a fraction. I can look at an ice cream and it jumps by a lot, so there are things going on behind the scenes that can affect it and it's not just a case of eat this or that.
It's life, stress, exercise, mood, over-eating, under-eating, wombling free... and keeping well-hydrated. So if your HbA1c has dropped from 70 to 60, then, even without it being obvious to you, something good has happened in your system.
I'm no expert, but I've found that drinking a lot of sugar-free flavoured waters helps ease any hunger pains, and that together with moderate exercise and a balanced diet (including the occasional treat) has helped me far more that sticking rigidly to a 'diabetic' diet that makes me miserable, and makes me want to eat all the wrong stuff.
You've got this!