What can i do to stop breakthrough bleeding while coming off birth control?

Not Much: You body has to regulate itself, something the pill has been helping to do. If your cycles were irregular before starting the pill, they will likely be again. Maintain a regulated diet (goal of same # of calories per day), make sure your thyroid is properly maintained and your cycle should improve over time.

Wait: If you are coming off birth control pills and having breakthrough bleeding, you may have another problem that is interfering with your cycle. I would wait 2-3 cycles. If continued irregular bleeding, you should seek medical care and evaluation.