How do I give my child Astmodil if they are constantly eating some food?

Hello, I have a small problem with administering the drug (Astmodil 5mg) to a child because the drug is given either an hour after eating or 2 hours after eating. And my problem is that the child does not last an hour without food, every now and then he eats, in small quantities but consumes, even those two hours after eating, and so it does not help Me in any way. Only before sleeping in the hours of 22-23 he does not eat anything, but these are already night hours