will give you ideas on how to get them to eat.
At this age, if they are 5 weeks they are in that confused stage. The KMR or mom's milk might taste good, but not quite satisfy them as their bodies are growing and they crave more. I would make sure the KMR hasn't expired and make a mixture of KMR and dry kitten food, let it sit in a covered container until it is soft and mushy. Put a small amount down on a flat plate, not a bowl. Put a small amount on the kitten's paw at the same time and then see what happens. At 5-6 weeks they move off of mom's milk and on to solid food. Mom cat shows them how to eat, but we try to do this, they can end up taking a bath and a rub in their food. Don't be disturbed if that happens, we are a poor substitute for mom cat