It really does sound like there’s a ND element at play, and statistically that makes it more likely that your LO could share traits too.
It presents differently in girls - where boys externalise and misbehave, girls internalise the shame and anxiety.
I grew up in a house where my dm had so much contempt for my df, and while it was understandable, it was hugely damaging to me because I felt I had to hide so much of myself.
It’s clear that you’re struggling to accept or accommodate these issues in your dh, and probably it’s better for the relationship to end rather than to keep going on this path damaging each other.
But even if you stop living together, you’re still going to have to co parent. And it’s going to be incredibly important for your dc that you find ways to work with his/her df that aren’t always highlighting his shortcomings.
I know my adhd can be infuriating (trust me, no one is more infuriated with me than I am) understanding what I’m dealing with has made a tremendous difference to being able to address and work on it. In the past so much energy was devoted to covering up, that there was nothing left over.
I hit the jackpot in life by finding a partner who appreciates all the good parts of me, and has the capacity to absorb some of my flaws.
You don’t have that capacity op - and that’s ok because we are what we are. But your inability to adapt is part of this dynamic. This isn’t an argument about what who should do; it’s an observation. And in the same way that he might need to research time blindness, you should be wary of getting involved with someone who hasn’t excellent executive functioning skills. Reading up about adhd may help you navigate future relationships, will help you co parent. Even if your LO is 100% neurotypical s/he still needs to be free to love their dad without being caught in an emotional tug-o-war.
It’s very clear that this relationship isn’t working out. Regardless of what the reasons are for your DH’s issues, you aren’t obligated to be his support human. You are every bit as entitled to walk away from a relationship with someone with adhd, as someone who is an infuriating faffer!
But if you only see these issues as his character flaws, or try and attribute an ability deficit to bad motives, it starts to justify questionable behaviour on your part too. Controlling when someone is allowed to be in their own home is veering dangerously close into abusive territory. It’s better to walk away.