Moving in together

My boyfriend and I have been together for over a year, as of recently we have started spending more and more and more time together, which is great.

I have my own place and he has his, however I am always over at his place because he asks me to be. (I sleep there every single night and only really go back to my place to get laundry or odd items for school)

Well he recently found out that he is going to be moving for work.

I want to go with him.

How do I talk to him about this?

(He already said he thinks it is a good thing that I wanna go with)

But I think that if I go with we should officially live together

How do we talk about this, it wouldn't be much of a change considering we practically already live together, but I'm afraid that with him being on the autism spectrum that I'd need to approach it differently because he doesn't handle change really well.

Any suggestions would be greatly appreciated because I wanna stay with him and am trying to find the best solution for our relationship to succeed without having to go into being long distance.