If you can get it down to the one thing you need to be doing right now, you'll be good. If you choose the wrong priority, then that's feedback for future priority selection.
Do not choose more than one thing. Just choose more frequently the smaller the tasks you need to complete are. Entry level engineering is usually a few things a day, the more senior it becomes one a day to one a week. Once you're in the executive ranks, it becomes one a month/quarter.
The mistake many people make is thinking they need to pick more than one thing because they have so many simultaneous things occurring. This is an incorrect view of time - you can only do one. Pick one. The world's urgency will interrupt you sufficiently that the rest is largely just task urgency update management.
If you struggle to pick something, I've found alltom's tooling great: https://apps.apple.com/us/app/priorities-in-motion/id1577124...