Try this guideline for exercising a puppy: 2-3 short walks per day and with many quick pee breaks: 15 minutes for puppies up to 3 months old, 30 minutes for 3 to 6 months old, and 45 minutes maximum until they are about a year old. Give your puppy exercise indoors until their final round of vaccination shots. But for puppies, there is a lot more to think about.