Lidocain patches are prescription. There are knee braces that can be worn at nigh that might make it easier to sleep, well and walk, too. https://promedeast.com/sleeping-with-knee-brace/#:~:text=A%20knee%20brace%20can%20help,to%20their%20injury%20or%20condition.

I'd buy the Bio-Freeze patches designed to be worn at night. They're pricey but worth it, although I've only used the for core and back strains. And Professional Bio-Freeze is the best product you can apply to the skin for pain. Good luck and all the best!