I switched to exclusive FF when I returned to work 2 weeks ago. DS is 15 weeks old and I am worried he is eating too much/gaining too much.

I dont know exactly what he weighs but I am guessing over 15 pounds - and he has chubby rolls on his arms and legs that seemed to appear almost overnight! He eats 4-5 ounces every 2-3 hours (except overnight when he goes 8 hours). Yesterday DW wrote it down and it was 36 ounces!!

We see the ped in two weeks but should I call in the meantime? I dont want to not feed him if he is hungry but I wonder if he is not giving the "full" cues or I am missing them?