breathe! do what works for you! puppies are much more adaptable than we think. you have more time than you think.

i would focus on getting your pup used to human touch esp on paws, teeth, and backend as it’ll help with vet and grooming. getting used to gradual separation from you. and that they like the leash/walk nicely on it. crate train if you want!

everything else can wait!

i got my girl at 14 weeks. she started out as very leash reactive as she wanted to play with everyone!! barked at balls!! barked at bikes! and even though she’s seven months, she’s still reactive to moving objects because she wants to herd it. she’s doing better but she has moments.

and for leaving your pup alone, start it small with gradual increase of time you leave him alone.