Husband Support Advice

Johnny • Dad-to-be. On Glow because my amazing wife is scared of the Internet.
My wife was just diagnosed with gestational diabetes by just a few points. The doctor isn't too worried; the plan is to control it with diet and prick her finger four times a day, but my wife is really bummed out. 
My question is, how would you want to be supported? Good safe snacks on hand and a healthy knowledge of gestational diabetes? I don't want to over, or under perform here and feedback would be much appreciated.
Seriously, thanks.