Dad Seems To Be In Mental Crisis How To Help My Mom Protect Their Home

Location: Kansas, US

Quick background. My dad has been showing signs of potential mental distress and I can't get his story quite straight. Very moody, very aggressive but also super happy almost manic. Isn't sleeping, staying in a hotel away from home. Taking on a lot of projects, buying things bigger and bigger. Currently he's buying a huge property where he is at. Mentioned he needs to pay 100Ks on in the future. He's mentioned my mom is against using their home, but he's saying he can do whatever he wants he's smarter and may need more liquid assets available and cash. He's pissed off his banks previously. If I ask my dad to explain his financial logic, he gets angry and assumes I think he is stupid. My dad is normally a very frugal and strategic business man. My mom said he's wiped out their safe that had smaller assets. I don't know what he has sold. My mom doesn't know anything about property because my dad takes care of everything, so I'm trying to offer her information.

I want to prevent my dad from pulling anymore money out of their assets and ruining their retirement, mainly their home and property, until he's evaluated by a doctor. What specific legal action can do this? I'm going to suggest her to contact a lawyer, but want to have an idea of what that road is going to look like so she can know. I'm reading about emergency temporary restraining orders on assets. I'm worried about how that will implode with my dad and make him very angry, but I don't want to see my parents livelihood disappear before my eyes.

Edit: to clarify my question