There can be various causes for decrease urine flow it can be due to urinary tract infection
, enlarge prostate in older men, scar tissue (stricture), effect of some drugs. Etc. Home care includes: Keep track of your urination patterns
Apply heat to your lower abdomen (below your belly button and above the pubic bone). This is where the bladder sits. The heat relaxes muscles and aids urination. Massage or apply light pressure over your bladder to help the bladder empty. Take a warm bath or shower to help stimulate urination.
If your problem persist or prolongs consult a urologist
for the same.