Just one more point, Isopure protein powder is lactose free if you also have protein issues. Very high quality whey isolate, but also expensive. Only wanted to throw that out there by means of information.
Additionally, I'm not promoting milk or dairy by any means, and there are CERTAINLY many other whole foods (fish, chicken, etc) which can sufficiently provide necessary protein... my prior comment was just a means to provide substitutes if you continue to desire milk and dairy products.