Dirty ears or ear mites? Treatments besides cleaning?

My cat Maple (F 8m) has been shaking her head every now and then, when she’s awake. When she sleeps, she sleeps!

I got her 4 days ago, she was living outside before I adopted her. I gave her a bath and bought some pet safe wipes, cleaned her ears with it. But they’re clearly dirty.

I have a vet appointment coming up on the 6th of October, and I’m going to reach out tomorrow morning. I just wanna know if there’s anything I can do in the meantime.