Problem with Rogaine, stop using it and the hair falls out. Also, I have read that Rogaine is only effective for up to 36 months. So you're just delaying the problem.
I have used Rogaine, Nioxin, Nizoral, Saw Palmetto, Lysine and probably something else that I'm just forgetting. Of all of these methods, the Nizoral works the best for me. I use it every day although the bottle says to use it every few days. It has done very well and I will continue to use it.
Here is a tip a hair specialist told me: use a confortable soft bristle brush and lightly apply 100 strokes of the brush to your hair and scalp each day. Every swipe of the brush = 1 stroke. It only takes a couple of minutes. I noticed within a few days I had no more hair falling out in the shower. It does not pull the hair out any worse, it increases circulation to the scalp, which is what nioxin is supposed to do. This way is cheaper than nioxin.
Good luck.