Just say no!
As will you.
When you attend one of my presentation classes or workshops next term, as every term, we will start from scratch.
No slides. Just you. And the audience.
Learning how to present well is like making risotto, I find. Quite a stirring process, and you add the ingredients one by one. Slides are the parmigiano on top. Added last. Or left away altogether. Why don’t you try some fresh herbs instead?