Hi, welcome. Do you have any photos of Tom to share, we all like photos. Lot's of great information here on the forum and helpful people if you have any questions about the breed. My dog Kaiser(10 months) went through his second puppy stage at around 7-8 months and did a little destruction mainly his poor toys but is overall turning out to be a good dog. My best advice would be if you see a bad habit starting stop it as soon as possible other wise it could be a losing battle. Enjoy your pup.
Jolanda and Kaiser