Questions regarding 5:2 diet?

Hey guys!! A little bit about myself. I was diagnosed in 2015 with type 2 diabetes due to my shitty pancreas. I was fairly active as I used to play basketball and was on and off at the gym. I was 6'1 and weighed around 180 pounds. Now I weigh 155 pounds. My blood sugar levels used to be in check but recently I have been slacking a lot and want to get them under control. I was wondering if anyone has tried the 5:2 diet and seen results with their blood glucose levels. And if they have had tests done to see if their pancreas has regained some sort of functionality and has improved their bg readings. Thank you in advance :)