My 5 year old is usually full of beans. He had a minor vomiting bug last weekend and didn’t really fancy much to eat afterwards. We gave him options of food from our usual meals, to toast, to treats. All refused. We didn’t worry at the time as he was drinking plenty. However he now seems quite skinny! He is a picky eater normally even without the tummy bug. Any advise on how to get him eating again…