Sorry for the late response.
This is kind of doable, you can easily have a model following the mouse using our pearl viewer: https://doc.naker.io/Pearl/First%20Step.html
This is the viewer we use on our website to make every model you see on this page https://naker.io following the mouse. It will be way more tricky to have only a part of the model which follows the mouse.
Also, I tried to upload your model in Naker but unfortunately, it is too big. We advise using a model lighter than 10Mb on the web to maintain a fast and fluid experience.
The Embed with Webflow is very easy, you can follow this quick tutorial which shows you how to do it: https://help.naker.io/en/articles/3560328-integration-in-webflow
Have a great day