Wonder if my dad had a mini stroke

For past couple weeks now, my dad's food intake has gone way down and he occasionally shakes his dominant hand, involuntary. He's in a nursing home and he did have a stroke several years ago. He now says odd things too, like I got a new TV, when he didn't. And he didn't know his roommate name. But he used to just act silly for years, and would fib things/act surprised. But this seems different. And he is now occasionally forgetting the name of his medicine.

His voice seems very light too almost weak. But he denied being weak. The staff doesn't seem to recognize any changes but they're never in there long.
My mom went in today and asked for a doctor to evaluate him or do a brain scan. But I know the doctor is not in until Monday. I wonder whether to make him go to the ER? He himself denied being weak but his hand can barely lift a cup. I don't know to wait until Monday. 😕
Rereading this myself, I think I'm going to push to go to ER tomorrow even if he decline at first.