Job, work, school, and pup. It's a balancing act, but it can be done! I work full time, and Kaji is home alone, or home with my parents. All the responsibility of his care does fall on me, but they do give me a hand because they love his too! I prep everything before I leave in the morning. My parents know the rules, and the limitations I have in place for Kaji (ex. No kitchen access if there are no humans present) and they follow them. They put the gate up to the kitchen when they leave the apt. They rub Kaji's belly if he wants to be cuddled and I'm not home, and they even let Kaji sleep with them if I'm out late with friends. I usually take home with me, but when I don't, he stays with grandma and grandpa.
Take it day by day, and you'll see that you can make it work too.