Relationship with dad

Every year around the holiday I get excited to see my dad. But for the last 2 years a week before we visit Michigan he tells me of some ailment or reason he can’t see us. I want to have a good relationship with him but I struggle between caring and not anymore. At this point I feel like it’s time to let go of the disappointment and not try so hard only to be let down. I’ve cried so much because of this. I want to get in a good place or some thoughts around this because I think I’ve experienced enough disappointment for sure.