I'm pretty sure your H is scared while I think 100+ days is GREAT it's still a short time. I doubt he's worked through his problems totally about why he drank.
I think you are absolutely doing the right thing in not letting him move back in you're not ready and neither is he. He wants to show you he's changed and I'm guessing he is getting frustrated that you may not see them(in his mind). I think he is also scared of relapsing and thinks that if he can get the M right everything else will fall into place which is wrong. Taking things as slow as possible is the best thing for both of right now.
Me:40 W: 39 T: 17 years M: 15 years S-9 D-6 D final 11/10/2009
"We are all faced with a series of great opportunities brilliantly disguised as insoluble problems."