Returning to work with a puppy

Hi everyone, I’ve had my little Bella for 4 days now; she’s 2 and a half months old. She’s like my shadow. As soon as I move around the house, she’s right behind me; she whines if she loses sight of me or barks (she’s so tiny but her voice really carries already! 🤦🏻‍♀️)

I’m heading back to work soon, leaving at 6:30 am and getting back around 1:45 pm. Aside from the toilet accidents, I’m really anxious because I don’t think she’ll cope. She has toys, of course, but that won’t be enough. I really don’t know what to do.

Thanks in advance for any advice 🙏