Yes, agree with others that you should either have her tethered to you at all times or keep her in the isolated area. No running around in your living room without a leash until later. Don't worry, she'll get there. Key is to prevent accidents so she won't get used to it. If she gets the freedom to run around and have pee accidents, soon she'll think it's okay and mommy will just clean it up
Training sessions are great for mentally tiring them out!

Not only that, sit/down/stay etc teaches them to sit patiently and not jump or beg. I've read over and over again that a calm dog is a happy dog!
Keep spoiling her with a variety of toys and chew toys, rather than giving her the opportunity to nip or bite at your fingers.
It might seem forever, but with a lot of consistency the beginning training period is well worth it later on once she learns what is good behaviour

It might seem frustrating at times, but just enjoy this puppy period. They grow up so fast~~~