My therapist has been canceling at the last minute a lot lately. Should I ask about it and how?

He reschedules but, it’s frequent.

August he canceled my monthly appointment, November he canceled, January he did, now he’s canceled yesterday’s appointment and rescheduled for today and then today canceled again. It really upsets me especially since I’m dealing with the anxiety that people dislike me. Im trying to not take it personally because he is good to me in therapy. But even not taking it personally it’s annoying to have him cancel at the last minute especially when my appointments are Tuesdays, you’d think he would at least tell me Monday