Hello My 2 And A Half Year Old Son Is

Hello
My 2 and a half year old son is having motion.its not that runny like water .but whenever he takes something he just after that he do motion.before it was 6 or 7 times a day bt now still he passes at least 3 times a day.in an average i hv to give him antibiotic after every two month as he get infection of virus or bacteria .dr. Sd its normal but for me its really a big problm his food intake is not age appropriate plz suggest me if i should consult some specialist