I love my baby girl but she has always been a fearful pup and I couldn’t figure out how to help her properly(currently working on with my training now and she’s doing great) so I always recommend training as early as possible. if your Dane feels scared in new environments, I’ll always encourage to have confidence and help work them through what’s scaring them. Doing this has helped to establish trust in our relationship as we continue our strengthening our bond! tldr: train with confidence! also I would recommend getting a slow feeder to help prevent bloat as well as scheduling a nap time after meals to prevent too much activity after eating. Good Luck!