6 year old with recurrent colds

My 6 year old son has been sick with recurring upper respiratory viruses all summer. He is also snoring, had an ear infection which was treated with antibiotics in July.

He is congested worse at night, craves ice water and frozen berries, little appetite.

After having a small cold all week he woke up croupy this AM which happens to him when he has a cold a lot.

He was given a calc carbonica as a constitutional last spring which I am on the fence about. The doc gave us one does which gave him screaming night terrors.

He also has two deep cracks on his feet, one on his big toe that is reoccuring but he wears sandals all year round and plays in the mud/water a lot.

He is anxious, fears monsters and being alone. He like to have me in the room with him but not his father.

His tonsils are large and I think he is working, slowly, on his 6 year old molars.

I have some food intolerances but am not sure if he does or not. It has been a wet summer here and do not know if he has any allergies to mold etc.

I feel like his immune system is inflammed and working harder than it should be. His energy gets depleted quickly but he will gladly play with friends. We homeschool though and it seems like he doesn't have the retention with math etc that he has in the past.

He sleeps well when he can get to sleep but he doesn't like the nightime adn getting to sleep is hard for him. He speaks quickly, moves quickly and is impatient and critical of himself and others.

Any thought would be appreciated, he really didn't like the homeopath we went to last fall and she is not close by really so...
thanks!