My son goes through days with no food only biscuits.

My son is 3 years and 7 months old diagnosed With ASC last year and he is non verbal. Can will say numbers 1-10 randomly and he can say car bus cookie and he calls me “Na” he can nod and shake his head for yes or no. He attends an ASN nursery part time. 

My son will eat the outside of a chicken nugget, chicken goujons (homemade) garlic bread, chicken with gravy, strawberries, a crispy roll with butter or a tiny amount of a sausage. He only drinks water or milk (from a bottle) He will eat a slice of toast for a snack in nursery but won’t eat toast at home.

Now what worries me as we go through days and days where he won’t eat the foods I’ve just mentioned and will only want to eat cookies and drink water or milk.

There was never any issues with food prior to last years lockdown and he ate a much healthier and varied diet but each week seems to get less and less food. He has also started to line foods up row of 4 chicken nuggets or a row of 3 biscuits. 

My sons dad has said that don’t give him any biscuits at all and on the odd occasion I have done this just to see if he will eat and the result is still the same he can’t/won’t eat.

Thank you in advance for any responses.