My NUT says hit 75gm protien and 64oz fluids a day. Eat Protein first and then veggies. Then if there is room fruit. Then, very rarely starchy carbs. Then be sure you're getting at minimum 30 minutes of exercise a day, if not ideally an hour. I asked her about long plateaus and she said that in her experience they are often caused by you eating or exercising in almost exactly the same way for an extended period of time. That your body just adjusts and the scale, or your inches, don't move. She said that you need to mix it up, all the time while sticking almost religiously to the hitting 75gm Protein and 64oz fluids.
So, though I haven't gotten there yet myself I wanted to share since I had just talked with my NUT about the topic. Good luck and I hope the scale starts moving for you!