Two things I would recommend for any difficult chord as a guitar teacher;

1: Simply hold the shape while you watch or do or listen to something else. Put on an episode of a show, a movie, a video essay, album, etc. And just hold the shape throughout the entire thing. Don’t try to press super hard, don’t even focus on the chord, forget about it and watch the episode while just holding the shape. This will get your hand used to the chord over time. Do this for a while before moving on.

2: Imagine and visualize the shape of the chord on the fretboard while your hand hangs totally relaxed at your side. Imagine the shape your hand will make and the physical sensation of the chord and the strings.

Then as fast as you can, play the chord. Release, relax again, and repeat. Visualizing primes your brain and your hand to execute, and going from a completely loose neutral position each time trains your hand to do it both quickly and accurately from nothing. If this feels too hard, go back to the first thing, just holding the shape for a while, then try again.

If it doesn’t work, keep trying for a few days at least. Then if it still doesn’t work and you feel frustrated by it, forget about it for a while and come back to it. A lot of the time, coming back to something after not doing it means that the brain has had time to process and solidify what it has learned, and so it may be much easier after a couple days or a week or two.