Puppies should be feed 3-4 times a day until they're about 5 months, then you can switch to twice daily. Cheerios is okay once in a while but it shouldn't be given everyday. Kongs once a day and make sure to use all natural peanut butter. Treats count as their daily food intake, so if you give lots of treats, reduce food. You'll need to calculate it according to the calories per cup which varies by brand. In the evening, giving a dental chew would be good.