I think if you're sharing your screen to show a presentation you don't even need to be on camera so you could write out or print out your speaker's notes and read from them without doing any of the below, but if you're expected to also be a tiny on-camera person in the corner then I suggest the following, so that you can share your presentation AND read your notes on-screen.
The option of recording yourself in advanced and pressing play on the day is also a good one, then you can just be live for any questions.
Make sure you don't confuse propranolol with propanol, should you choose to go down the medication route :)
(Practise / play around with these two things before going live).
1. Powerpoint
Add speakers notes at the bottom of your slides, set it up as a slideshow but choose Presenter Mode so that you can see the notes - there are several ways to do this depending on your platform but Slideshow » Presenter view is one way, or click the little Slide show icon at the bottom of the screen, then click the three dots that appear (on mine at least!) and choose Presenter view.
You'll see your in-play slide on the left, the sequence of slides in your 'stack' below and your prompt notes on the right (with a miniature version of your next slide at the top). If you've not used this set up before I'd recommend having a bit of a play with it - running through the slides, stopping and restarting (so that you're familiar if you need to troubleshoot in the middle of your live event).
I've added a screenshot of this and attached the image.
Once that's done the next thing is to create a pretend Zoom room (with just you in it) to which you can test sharing your screen, and adjust the size of what portion is shared so that the room would see only your slide and not the notes.
In other words you'll run your presentation from a smaller bit of your screen (makes no difference to viewer) so that you're hiding the speaker notes.
2. Zoom
• Start a new meeting.
• Click the Share screen option » then select 'Advanced' at the top » Double click "Portion of Screen"
A window will pop up and you then need to resize it so that it fits snugly around your main slide, on the left. Fiddly, but only needs to be done the once.
In the second screenshot you can see a thick green border around the slide - this is the share window and everything inside it is broadcast to your Zoom meeting attendees but nothing outside is. It's resizable (just grab the edges or corners and drag to fit).
The next time you share your screen that pop upwindow will have the same default size and position so you can have your presentation open in the background and people will only ever see your slide. You can read aloud your notes appearing on the right which are seen by you alone :)
Practise to get a feel of using the spacebar or mouse to advance to the next slide, you can also scroll down on the right to read through a longer list of notes (you can shrink or enlarge the font size). If you click into the speakers notes though when you press 'space' you'll just start editing, not advance to the next slide, so be aware of where your cursor is.
Practise your 'joins' where you link from one slide to the next, or from one concept to the next and practise enough times that you feel you know your material. After a while you may find that you don't really need lengthy speakers notes, just a few keywords to prompt you to say whatever sentence(s) you want to say.
Good luck,
Jo