Can you persuade him to recognize that this is a problem ( for you and probably for other people in his life, such as at work ) and to agree to enter with you into marriage counselling to sort it out ?
Meanwhile and anyway, treat your own time as valuable from now on. Explain it to him clearly, once, that you will no longer wait for him because he is choosing to be disorganized. Stop waiting for him. Agree or announce the time for departure, or meeting, or whatever, give him 10 minutes grace, and then leavbe and go ahead on your own.
Is this sort of thing a deal-nreaker ? It depends on the details of the deal !
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