HRM Keeps dropping

Hello hope everyone is keeping safe and well, I’m having an issue with my HRM . My set up is neo 2t,Apple TV and iPhone . When I log into zwift everything connects and runs fine until maybe 10 minutes and the the HRM drops connection and comes back on numerous times although once it wouldn’t reconnect. I’ve tried to eliminate possible interference from other Bluetooth devices with no joy and replaced the battery I know Apple TV only has 2 spare Bluetooth connections but the companion app doesn’t give me the option of using it
Thanks for any advice