How to deal with a very high-energy dog?

We go for three walks a day, morning, noon, and night, and I play ball with him for about 20 min outside as well as play tug of war with him throughout the day. He is still very high energy and I am struggling a little with work. I work from home and he wants to play whenever he is awake, gets fussy when I won't play with him. I have tried using kongs with peanut butter but that only distracts him for about 10 min. We are working on training for commands like sit but that is still very much a work in progress. I'm looking for suggestions on how to help manage his energy better so we get a few more calm periods and he does not chew up everything in sight.

If they don’t get enough exercise, a cute case of puppy zoomies can progress into a lifetime of boundless energy and destructive behaviour. Of course, you’re going to want to get some tough toys for lots of fetch, but these dogs need more. Luckily there are lots of unique activities that wear out your dog by harnessing their instinct and tapping their brains. Dr. Mary Burch, Canine Good Citizen Director for the American Kennel Club, says some high-energy dogs do need more than daily walks and ball play. But before you dive into a new activity, your dog should learn the fundamentals. Training is extremely important for dogs that are spirited and full of life, basic training exercises give active dogs something to wrap their minds around and builds a foundation for other areas of training. Because high energy dogs often have active minds, games and mental stimulation activities are perfect for when you and your dog are at home. Long walks and playing with other dogs are great ways to wear out the pets. But if your spare time is in inverse proportion to your dog’s energy level, consider hiring a walker or taking your dog to daycare.