Is Operation Necessary To Treat Adenoid?

MY SON IS 7 YR OLD ,HE IS SUFFERING FROM ADENOIDS FROM THE BIRTH, 1 YR BACK WE CONSULTED DOCTOR ABOUT ADENOID AGAINST MY SON,ENT DOCTOR ADVISED TO GO FOR OPERATION , BUT PADIATERIC DOCTOR ADVISED TO WAIT SINCE THIS ADENOIDS WILL CURE AT THE AGE CROSSING 12 YRS ,MY SON FINDS DIFFICULT ESPECIALLY ON SEVERE COLD , HE USED TO OPEN IS MOUTH AND BREATHE , WE FOUND HE STRUGGLES AT THAT PERIOD WITH LOUD SOUND NOISE WHEN WE SLEEPS.
PLS HELP US WHAT TO DO IN MY CASE.