Issues disabling scroll with full screen menu

Hi all, I’m having some trouble disabling scrolling of my website when my full screen menu is open - I’ve tried a number of methods but haven’t had any luck. Most methods don’t disable the background scroll at all, and this code ( disables scroll on the body element but won’t allow scrolling within the menu modal to see overflow elements on smaller screens.

If anyone has any ideas or thoughts I would be super grateful!

These are some other methods I have tried that have not worked:

Here is my site Read-Only: Webflow - Trace Enterprises