Hi, @
winter moon!
First off, congrats on setting everything in order and up-ending your life. I did something similar, though on a smaller scale (no property to worry about), and it was very stressful. So, kudos to you for pulling it all off!
perhaps I am being preemptive and seeing problems that are not there...
Maybe not. My girlfriend and I have recently been working through several issues. They were minor on the surface, but they grated on us, and our relationship is definitely the better for having addressed them. (She's INFJ too, btw, so I can't offer an insights MBTI-wise.) Just be careful in how you approach the issues.
Several times he has told me I need to give him "space".
That's a classic guy line. My girlfriend related this analogy to me, and I think it'll help you too. (I think it's from Women are from Venus, maybe?) When girls are stressed, it's like a well of water. They need someone to go with them down into the well, "sitting with" each emotion as it comes up, then moving on to the next one. When you reach the bottom, if the girl feels she's been heard and valued and loved, she will typically feel far less stressed, much more resolved, and very loving. I'm basing this part off my girlfriend - results may vary.
Guys are different. When guys are stressed, they need to retreat to The Man Cave. It's a place where they're not confronted with personal problems. For an introvert, he needs to be alone. Often he'll play video games, read the paper, do something mindless for a while. Rest assured girls - he'll come out again. It sounds strange, but guys need distance to de-stress. Playing games or reading the paper etc give him something tangible he can do. It's sort of like he's avoiding a flooded area, and waiting for the flood to recede before wading in again. Anyway, just like girls need someone to go down the well with them, guys
*need* to know that it's okay for them to go into The Man Cave for a while. If they feel like it's a problem for you if he retreats, he'll usually still retreat, but he'll be stressed about the girl's reaction. This can easily become a vicious cycle because the very thing he's doing (retreating) is adding to his stress. (In which case, it'll be a LONG time before he'll come out of it. And he'll still be afraid.) Once he's de-stressed himself, he'll come out again, and he'll be much stronger for it. That's why guys say they need space. It's okay to give him space. Trust that he loves you, and that he'll come back.
I suggest you have a chat with him about this. Make it clear that it's okay for him to go into the Man Cave, but also make it clear that when you're stressed you need someone to go down the well and be willing to go through all the emotions with you.
If he's been playing a LOT of video games lately, I wonder if he has stress that he's not dealing with effectively? Maybe he's doing his best, and maybe he doesn't know how to do better. I have often turned to video games for my Man Cave retreats, and it really didn't help me or my relationships or my "job" (getting a doctorate degree). I spent so much time in them that I had no time for organizing my life, studying, spending time with my girlfriend... It was just a vicious cycle.
That's why I suggest talking with him about his stress. Once you both understand how the other works, then you can figure out how to handle these things. And I know - he doesn't like to plan. But trust me, if you show that you're willing to give him the green light on the Man Cave, he'll be all ears and willing to plan! (At least willing to plan that much. And chances are, he'll become more willing to commit to things over time.)
Wow, that was a long schpeel! Double kudos if you made it all the way through!