My male pup is 13 weeks and 1 day old. We are seriously struggling with him because he is either asleep or biting us. It’s all or nothing. From the minute he wakes up he is trying to bite us. We have tried redirecting him to toys for 4 weeks now and it’s just not working and he’s constantly nipping and biting us. He is well exercised, socialised and fed. I feel exhausted and upset as if I’m doing something wrong when I give him everything he could possibly want and more. He just doesn’t listen to us - can anyone please help us as we feel like we are doing something wrong and are at our wits end with it