Pre proliferative retinopathy scare.

Hi
I'm brand new on here, and today I received a letter that has absolutely terrified me! I have to go back in 6 months for an appointment at a digital surveillance clinic. Typical that it arrives on a Saturday so I've got the whole weekend to fret and worry! Any thoughts? My diabetes control needs to be far better than it is!
I am really scared of the procedure involving laser or injection into my eye. Can I help stop this or is it too late?

Thank you. I really have worked myself up into a state!

Not helped by the man who did the screening on Monday and said it all looked fine and he'd be surprised if I got a call up less than 12 months. I'm aware, I have had a serious wake up call!

Thank you @NinaB73