Ring Doorbell 3 constant wifi disconnect

Our Ring doorbell has been installed for couple of years and had zero issue with it until recently. It constantly disconnects from the wifi, multiple times a day.I have changed the battery for the spare we have and Factory reset it, no change.Nothing has changed between it and mesh wifi point. I have tried swapping round the eero’s in the house in case the closest to doorbell was faulty, no change.We have 5 camera’s all using same mesh wifi, they are not having any disconnect issues.When it is connected RSSI -51.Time for a new one? Or any suggestions??