Sorry you've arrived here, but you will get excellent support.
Prostate cancer tends to move slowly, and 3 months is not normally significant for a Gleason 3+4, although that also depends on details you haven't given us.
It would help to answer in more detail if you create a bio with more details, such as PSA scores/dates, results of the biopsy in terms of positive cores and extents, scans clear?, staging (e.g. T2?N0M0), etc. Click on my avatar to see an example.
There are two things to look at, exercise and diet.
How able is your husband to exercise? e.g. how far could he walk? Is he quite fit? Does he have a bike and cycle? Does he enjoy swimming? Does he have any health issues which prevent exercising?
Might be worth finding a personal trainer who can design a program for your husband if he's up to it.
Besides losing weight and getting fit, exercise is also known to slow the progression of prostate (and some other) cancers, and is important for those on AS too, as it significantly extends the time before intervention is required.
Then there's food, getting both the calorie intake correct, and ensuring it is of good nutritional value. It's not just a question of eating less because that can leave you malnourished, but eating the right things. Again, your personal trainer will make recommendations about food if they know what they're doing. There are some foods thought to be good or bad from a prostate cancer point if view, but initially I would just concentrate on dieting for weight loss and good nutrition - a diet for prostate cancer sufferers is a second order issue which you could look at once you get the weight issues solved.
If you can get exercise and diet correct, you could do it in 3 months, but it will be a challenge.
Edited by member 11 Jun 2019 at 19:49
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