I’m sorry, that you’re Boys were dxd. It is a normal thing for Mother’s and Father’s to do. Cry and Cheer for our Children. Then get up and fight for their lives.
Back in the 50’s/'60’s my Mom and Dad were presented with 3 Diabetic children. It was hard on us and my Parents but we got through it. They didn’t know anyone in the Family with Diabetes and knew nothing about it. I imagined Mom took up some blame on herself. Then many years later my Cousin on Dad’s side was Terrified when one by one, her 3 Boys were dxd.
I made it clear that it is not our fault or their fault. We just have to keep our Spirits up as much as we can, so that we can deal and make the Best out of any unwanted situations that we are presented with. There you go…I Love the watermellon comment. 
Perfect!
We will always worry about our Kids. We are Parents. That is our job. Each of your Boys will come to terms with how they will eventually deal with their own Diabetes and Acceptance in their own time. Teach them Well. As you know, there are different alternatives on how this disease can be managed, in most cases. They will choose which avenue appeals to them. I know that you will worry about them but try to make some time for yourselves to relax and gain renewed strength. Best to you all.