You would think it works like that, but unfourtanetly not the case. I used to eat 6 times a day in college, very high protein diet, and the heaviest I got to was about 143. Hoping my metabolism starts to slow down sometime soon.
Try 5x5 instead of 3x5. I don't know if you are already doing it or not, but split muscle groups up into different days. For examples I do bis/tris one day, back and shoulders one day, then legs and chest both get their own days. I do abs every day. Keep mixing up your routine, maybe 3x8 one time, 5x5 one time, and then pyramids the next.