So I've had a couple litters and I'm starting to see a flaw in my rack maybe? My baby rats seem to be either weaned off of mother or very very very close to it. Now my problem is that they are small and I don't know if they can reach the top of the rack where the food is... Did I do something wrong or should I just add in more bedding or what do I do? Throw the food just on top of the bedding?