My son has always been a good eater but the last week and half he is refusing to eat anything other and fruit and cereal, he usually loves beef stew and homemade meals, he has been teething a little but just finding it hard work as when it gets to lunch and dinner he just doesn’t want to eat the food at all and starts rubbing his hands across his mouth in a fist motion. I can’t work out it just teething or he’s just going thru a really fussy phase ?