Welcome to the world of puppyhood! I have a 3 month old and could have written your post! You will see lots of posts and threads on this which will tell you this is completely normal! You are doing all the right things! You have to find what works! A few of those methods worked only for a short time for us, some not at all. I find if I switch things up, it helps. The most effective thing for us has been to crate him when he does not respond to redirection. He gets 2 chances and then it's in the crate. If I think he's tired, I will leave him there until he falls asleep and let him nap. If he has just gotten up and is like this, I will sometimes have to crate him 3 or 4 times til he finally finds a toy to chomp on. We call him our " furry jaws"! You should see my arms and legs with all the little puncture marks! I have so many holes its no wonder I don't leak when I drink!! From what I am told, it will all go away before you do! There will be others along to help too! Maggie is just beautiful by the way!!