What helpes me, is to practice these 4 chords in the correct order as a 1min chord change exercise (without any rhythm or timing) and really get them into the muscle memory.
What also helpes is the opposite - playing them slowly and focusing on the sound they make until you are be able to hear the 4 chords in your inner ear. In case you forget a chord, you can just try a bunch out, until you get the right sound, then double check with what you have written down to make sure it is correct.
Hope these helps 