WI - Need help checking if I'm understanding household changes/FPL/eligibility correctly

I've been told different things by folks when I call for info, so I'm trying to determine the state of mine and my son's Medicaid eligibility by online resources. Would appreciate a few people double checking that I've got this down right.

My partner/son's father and his daughter are moving in with me at the end of the month. He has primary placement of his daughter (4 days/week) so I believe our household is the one that counts her as a household member for benefits purposes.

Important details:

> His last W2 - $52,000. My last W2 - $7,000.

> Our son and I are both currently receiving Medicaid. Our son is 2.

> We are not married.

> I am a part-time student, part-time employed, if that matters to anything.

Conclusions I need double checked:

> Since we're not married, Medicaid would consider my partner, his daughter, and our son a household for our son's Medicaid eligibility, but not include me in that, correct? Everything I'm seeing online says that some government benefits or forms of evaluation include everyone living together if they share a child (i.e. SNAP, some tax stuff), but Medicaid is excluded from that.

> To the above point, our son would be eligible for Medicaid to 300% of FPL since he's 2, yeah? And as a household of 3 with an income of $52k, that's below 200% FPL, meaning he would be able to stay on Medicaid?

> My Medicaid would be unaffected since we are not married and I wouldn't be included in the definition of my partner's household for Medicaid eligibility?

Side question I haven't been able to figure out:

> If my partner and I get married, I would lose my Medicaid since it's just kids evaluated at a higher FPL eligibility. Is there *any possible way* I could stay on Medicaid if we were to get married...? Hoops to jump through, fees to pay, etc? I receive mental health related social work supports through my county that I would no longer be eligible for if I were to no longer be on Medicaid, so I'm very anxious to stay on it until my care plan is seen all the way through.

Thank you for any feedback, especially if I have incorrect info!!!! 💖