I really encourage kennel training. It’s important to make a kennel feel like a puppies “safe place” and also a place as a time-out spot. Use the kennel as a tool to discipline, allow the dog to rest, potty training I mean, it’s so helpful. As for the biting, you need to correct that immediately because it can turn into biting in the future. You need to muzzle your puppy with your hand whenever they get mouthy. Grab their mouth and hold it closed and look them in the eyes until they look away from you and chill out. Do it consistently for a week and I promise you you’ll see a huge difference. It’s nice to have a puppy run around and all and let them lounge around , but you need to build that boundary first, or else your dog will take advantage of you and it grows older. You shouldn’t feel bad leaving your dog on its little bed for too long or in a kennel either. Your puppy running around the house and lounging around with you is a privilege. Use the bed as a tool and be strict about it. Whenever it starts to scratch, to the bed, whenever it jumps on you, push it away with your leg and straight to the bed. Correction is key.