Advice for Long Distance Relationship NT-ASD

Hi everyone. I am an NT partner who has just moved about 20 hours away from my two-year ASD (suspected) boyfriend. He seems to be doing fine with the separation, but I miss him all the time. It's a temporary move; I am doing a two-year masters program, and he's still finishing up school at home. I am just a very enthusiastic person about a lot of things, so I love to write him, call occasionally, and look forward to seeing him. I always put a lot of effort into gifts and surprises. I know that he is not like me. He has never thought to call or write, and he forgot my birthday this week, and I know he will forget our anniversary next week. It makes sense; he forgets his own birthday if no one reminds him. Usually I text him when his friends have special occasions so he will text them to be supportive. I know that it's unreasonable to wish he would put in similar efforts to mine, but it still really hurts to feel like he does not care because of traits that I know aren't his fault. Does anyone have any insights or stories about situations like these? I am just feeling like he does not miss me because of our different ways of caring, which is really hard.