My watch constantly connects to my bluetooth on my phone as soon as i hit run and it finds GPS, how to make it stop?

I toggle to the watch and click phone off then go back and select run and it will still automatically connect to my phone via bluetooth right away which is on because of my headphone i i click forget device while running  so now its unpaired it its constantly flashing the code to pair it while running.  I dont want the watch connected via bluetooth when im doing an activity as its just burning battery and  I cant seem to make it stop and it never did this before im baffled.