Training forearms - how do you approach this?

Hi all - advanced lifter here. 15 years in the game where I’ve been more on than off.

Switched to a low volume program recently to experiment with upping intensity and frequency. Took my session time down from 1.15 hours to .45 hours, so I have more time for accessories.

Started doing forearms because why not see how they’d respond to 3-6 months of training. I’ve never isolated them before and I feel I’m missing something. I’m doing wrist curls and it must be activating my forearms logically but it just feels like it’s just working my wrist tendons.

So my questions are, am I missing a technical cue? Is there a better exercise? What are you guys doing?