You probably heard about the Pareto principle. Let's take the 80/20 idea and use it in the context of becoming a better presenter.
Here's how it goes. This is the ask I have for everyone we work with.
The time you spend in learning to become better in your work. Let's split that time 80/20.
80% - improving your domain knowledge and expertise.
20% - communication & presentation skills.
That's it. Not more. Just 20% of the time you dedicate to learning and getting better version of yourself.
It's not a big ask, is it?