My watch won’t stay connected when I leave home

I have a GPS apple watch, when i walk away from my phone my watch does not repair when I'm back in rage of my phone. I have to go to my phone and turn blue tooth off and back on for it to pair with the phone. This started this week.

Do you have a cellular version of the watch? Or a GPS-only version? A GPS-only version requires you to be near the paired iPhone to be connected.