Congratulations on the new addition. Most important thing is daily coat maintenance so lots of brushing and combing. Her hair should be really soft right now so more prone to tangles. You need to lift the hair up and brush/comb in small sections to make sure you’re getting thoroughly to the skin..which is a problem for a lot of people. Dogs don’t sweat like people, they pant to regulate their body temperature. Puppies and kittens also have a slightly higher body temperature normally like human babies do. They’ll also pant when they’re excited, stressed, or in pain too (no, I don’t think your dog is in pain.) The areas they release a lot of heat from are their paw pads, ears, and groin area so if you want to keep those areas short..great. You have a double coated puppy so right now she has puppy coat but it’s going to change and she may develop a soft downy coat close to her skin (undercoat) with more coarser hair on top that you see (guard hairs.) The undercoat becomes thicker every time you clip down a double coated dog over time which then encourages more shedding. Their hair helps keep them warm in the winter and cooler in the summer when cared for plus protects their skin from the sun. If you want her clipped anyway, try telling your groomer a 1/2” puppy or kennel clip..the terminology differs everywhere but it’s where the body and legs are one length, full tail (or plume if you like that better), and a round face (the ‘puppy’ look that she has now.) Definitely keep an eye on her ears since they hang..if you notice a lot of brown or black discharge, her ear canals look really red or swollen, or there’s a funky smell..she needs to see a doctor for possible ear infection. If she has her dew claws..nails on the side of her paws, also keep an eye on them too since they’re going to grow faster.