It looks like you're new here. If you want to get involved, click one of these buttons!
My milestone is if ai can sing the melody and play the chords easily I have it.
No just playing the chords but play the arps would be an even higher level
Take whatever tune you're working on and play it real slow, totally without accompaniment of any kind.
You will by necessity be forced to stay pretty close to the chord changes, but still your brain has plenty of time to stay ahead of your fingers and navigate from one chord to the next.
It's actually not very hard at a slow tempo.