How can I connect my Apple Watch to my new phone when it says I can't.

Hello, my name is Adianet Carmona. Today, my phone turned off completely, so I went and got a new phone. I have an Apple Watch, and when I went to connect my Apple Watch to my new phone, it said I couldn't. it told me that I needed to disconnect my old phone, but I can't since I can't turn it off, what can I do to connect my Apple Watch to my new phone?