2 months is definitely too short. Did you connect the Tiles to your phone?
This is why I use a combination of bluetooth tracker and gps for presence detection. I wrote a small app that creates a device tracker out of the bluetooth tracking and use this device tracker in combination with the gps tracker. I just added both device trackers to a person and the person integration handles the presence detection afterwards, there’s a good explanation on the person integrations page on how presence detection works if you have multiple device trackers for one person.