Can a puppy adapt to sleeping in two homes during the week?

I’ve almost made my decision: I’m going to adopt a puppy. The only thing still holding me back is that I don’t live with my partner, by choice. I’m wondering whether it would be okay for the puppy if I stayed at my partner’s place several nights a week with the dog, without disrupting or unsettling him.

For context, we live on the same street, and my partner has a very well-trained 9-year-old dog.

Thanks for all the answers !