Since EliteFTS was brought up I also add that OP should listen to the ones with Justin Harris where he worked out the math on how much muscle tissue you can build per day even on gear and the way protein is used to create this tissue so he came to a conclusion that your real protein intake requirement can be as low as a few grams per day and you'd still have a massive surplus of it. It's a lot more than I can try to type from memory here, but incredibly interesting and worth watching/listening.
Personal opinion is: If you're growing, you're eating enough. If you stop growing, eat more. Add one extra meal, or just increase the size of an existing meal, with another protein source; Add another half chicken breast to a meal, buy larger steaks, use another scoop of powder if you really can't stomach more solid food, drink an extra cup of milk, simple stuff. If it slows down or stops again, add a little bit more.