@EarlyForest -- There are quite a few home remedies for a weak bladder floating around.
Most of the ones that I've heard have good results are muscle exercises.
One site said that you can strengthen your bladder control by massaging the muscle on top of the bladder (near the pubic bone) for a few minutes every day. This is said to strengthen the bladder control muscles, although many people say it makes them sore at first.
Also, many yoga poses are associated with weak bladder control, particularly those involving forward bends and inversions.