Nose and ear issues from 15days+ Tube!

Hi my son had a cold a month ago and had blocked nose in the night and runny nose in the morning every 5-10 minutes he had to blow his nose and clear his throat his tonsils swole up and he had body pains and I took him to a local doctor he prescribed Nasivision and some antibiotics they worked well but after the dose was over he got all nose symptoms back stronger than before he has completely blocked nose each night and is totally unable to breath for a while the Nasivision liquid is not going in either and when it does all the mucus becomes the consistency similar to water and he has painful strong sneezes and lot of them. Now he has ear issues he first had a very itchy ear and lots of liquid consistency earwax coming out and he used some olive oil drops in the hopes to relive himself of the itching it worked well in his left ear but in his right ear the eardrops did not go in to the eardrum and he said it felt like his ear was submerged in water and he was hearing from a small tube