It will be so exciting to be getting out of the house with your pup which means it can be tempting to want to go too far too quickly. Remember that puppies are doing a lot of growing and just like babies this means they need lots of rest. Some puppies can even sleep for up to 20 hours a day!
More importantly too much exercise at this early stage can cause injuries in later life, so try to avoid long walks and let your puppy rest when they need to. You may find it helpful to monitor how much activity your puppy is getting each day with a dog activity monitor like PitPat, which gives you a tailored exercise goal based on their age, weight and breed that will gradually increase as they grow.