I wish I knew what to say... Our intimacy was similar at your stage in marriage, however, my H was really good about establishing that I was ranked higher than his mom.
I think I would have a talk with him about him finding a way to establish that you are the woman in his life now. Give him some flexibility to best sort it out for himself, but he cannot answer to two women.
For my H, I asked this of him before we were ever married (my MIL is a *strong* personality), and he did a great job of drawing boundaries - small at first, but eventually it was scheduled visits, calls before coming over, and then invite only. Now, we have Sunday dinners as a family, and invite them to kid-events, and it's great.
Best of luck on the other stuff... I have no idea.