Funny enough, I am actuallly having the same amount of phe each day as you- 325 which works out to be 6.5 exchanges of protein. I find that if you divide your protein throughout the day this helps keep your phe levels stable each day. For example I have around 75 for breaky then another 100 for lunch and round it off with 150 for an evening meal. Its also important to spread your formula out evenly throughout the day to keep levels stable. I have some tabs 3 times a day after meal times. You will also need more calories if you do a lot of exercise as phe levels rise but will have to watch the protein.