yes yes and yes. My Shana at 14 is sleeping later and eating later and not eating as much. I think about it all day and it feels like I spend a lot of thought on what to get her to eat. I hope it is what the others have said, age, not as active, not as hungry. I do try to give her treats or small amounts of food throughout the day ( she does not want to start until 10-11:00am). I find she is a new fan to canned wet food ( the smallest of cans because what she likes today she does not like tomorrow??!!). How are her teeth and her mouth? I do not think I can get enough calories in with just one meal at the end of the day??!!