Sensory help PLEASE

So I need help. Sean is refusing to eat dinner EVERY NIGHT.

We have tried everything, giving him stuff he loves, or stuff he has eaten several times.

Eating in the kitchen, or his play kitchen, in his special chair.

NOTHING.

I mean this has been going on for quite awhile and we thought he would eventually grow out of it. No such luck.

Every night there is a battle, he refuses, than cries, hits, meltdown starts.

I just don't know what to do. I am sure it is sensory related but I am not sure what to do before dinner so he will eat.

Like in order for him to take a bath we rub the brushes on his whole body for pressure.

For him to play with shaving cream, paint, he has to do the wheel barrel walk with deep pressure on his hands.

For him to get undressed we need to hold him tight with deep pressure.

What do we do to get him to eat.

He doesn't get a snack or milk after nap.

For breakfast he eats

Banana and Pancake minis (4) with a 1/2 cup of milk, or has a 60z yogurt with water, or oatmeal, or etc something small.

At school he gets a Dixie cup of milk or water with a few pieces of a snack

Lunch he gets a peanut butter and jelly sandwich, or mickey nuggets 3, pasta, bologna, grilled cheese and fruit or applesauce with a 1/2 cup of milk or water

After nap nothing, sometimes water

Dinner he won't eat anything. We have sent him to bed with out eating several times, I feel bad but I don't know what else to do. If he doesn't eat he doesn't get milk either.

He eats breakfast at 7 AM
Snack at 9:30 AM
Lunch at 12 PM
Dinner 5:30-6 PM

Please help any ideas............................................................................................................