This ⬆︎⬆︎ is excellent advice. I did excactly as Dorothy said. The screen disengaged from the case very easily.
I used a small piece of paper to prevent the connector from connecting, no need to wrestle with even low-stick adhesive.
The removal and installation went exactly as described, and the new trackpad worked correctly the first time. The toughest part - truly, not all that difficult - was manipulating the four screws that hold the trackpad in place. I don't think I've seen such small threaded fasteners since I went to a watch museum!