I want to cover part of my track pad

I have the 2023 14" Macbook Pro and, while typing, the cursor jumps to a new location where my text is inserted. This has never been a problem only my older MacBook Pros (2015 and older). I've traced this to the fact that the track pad being too wide. Comparing track pads, older laptops had the track pad dimentions that spanned from the left margin of the C key to the right margin of the comma (,) key. This current Macbook spans 1/2 a key farther than the above. Key location determines hand placement, so when my hands on the keyboard's "home row", the thenar arches (muscular pad at the base of thumbs) of both hands now touch the outer margins of the trackpad. Searching the internet, I see this has been a problem for at least 3 years in earlier models. I want to cover the outer margins of the track pad so my hands stop activating the track pad and reposition the currsor inadvertently. So far have not found a material that will prevetent activation. Regular (scotch) tape and electrical tape are inefective at preventing activation of the track pad. Any suggestions?