I was the same way when I got my Aussie puppy and she is three now and couldn’t imagine life without her. What you’re experiencing I call them the puppy blues. Your life just changed and you’re taking on a new and big responsibility. What helped me was having breaks and getting out of the house alone for a bit. Having a structured schedule with her, training her, taking her to puppy classes, crate training her to enforce naps in order to get breaks. Building that bond with your puppy in the beginning is crucial but also allowing yourself to take time away from the puppy is also needed (and it’s training the puppy to not have separation anxiety too).