Hi all, my little Mickiey is 9 weeks old, I got him a week ago and decided to take off from work to spend all of my time with him. He had kennel cough when I got him and still does therefore he has not had any of his vaccines yet. However eventually I will have to return to my regular life and leave him alone for a few hours a day. Any advice at what age or after how long I can leave my baby home alone? should I put him in a crate or let him run around the apartment? is there a process to let him get used to being alone? He is sooo little and I feel bad for him =[ .. any advice?