No sleep since getting Air Tags

My husband and I each have a small dog. We recently purchased special collars for them, and now they each have an Air Tag. My dog's air tag is connected to my phone; my husband's dog's air tag is connected to his phone. We sleep together: same room, same bed. The dogs sleep with us: same room, same bed. We also each charge our phones on our nightstands right next to our bed every night. For some reason, we are hearing random beeping that wakes us up, usually in the 3am vicinity. I don't think it's one of our phones because neither of us finds any notifications in the morning. Is it one of the air tags? But why? We're all together, so it seems odd that anything should be beeping at this point in time. It stops on its own after beeping a few times -- we just wait it out and try to go back to sleep. We are EXHAUSTED. This happens on a fairly regular basis. I'm ready to return these things.