At least 3x a day, but not unusual to go for more. Usually first thing in the morning, often in the shower. At work, either at lunch or some time during the day. Then once more at home, sometimes in bed.
Yes, listen to what he is saying here as he knows what he is saying. Prostate issues con come as early as 45 years old and Urologists have no mercy on your pleasures. So enjoy it all you can while it lasts. YMMV always