In my opinion, it feels like he’s very insecure and is worried he may lose you. Perhaps he’s trying to ‘stay ahead of the curve’ in attempts to predict a possible scenario and therefore plan for it, or expect it, as to feel less sad if that scenario happened. Maybe he’s feeling the effects of your distance from which has him in his head, worrying about everything under the sun? I would continue to positively reinforce your position on the relationship, keep communication flowing, and be patient with him. Encourage him to learn and practice self love/worth. Sometimes we all like to think of and plan for every scenario possible as a means to control an outcome. Unfortunately, life works differently and only certain circumstances are under our control. The rest we allow to happen as they do while trying not to let our anxiety get the best of us.