Man that fucking prostate, I know it well enough... Maybe he is not aware, you could forward him this, if the flow gets too weak, his bladder will weakened over time until it can't recover anymore, if he has enlarge prostate there 2 options, pills (there's 2 types to take, one to control prostate dimensions and one to improve the flow) and go ahead until it works, or go under surgery, it's not a dangerous one but if it makes too much scars you are fucked up... The scar crap happened to me and I had to do 4 surgery in total for that, what a fucking nightmare that was
Type1 diabet is so lame, you are just born with that, there's nothing you can do... I hope you can handle it properly
As for me I noticed things went down the hill after 35ish, then problems start to pop up, I try and sort them by myself if I can and it's not huge problems