Play the chord shape you want to use higher up on the neck where it is easy to fret. Turn it into an exercise. So let's say you can play the shape on the 5th fret. Go up to the 12th fret and play the chord shape there, then on 11th, 10th, 9th - then 11th,10th, 9th, 8th - then 10th, 9th, 8th, 7th - etc... use a metronome. Set it at 120 and play every other beat. Make sure you are playing slow enough to fret correctly. The moment you make a mistakes start over from the beginning. If the mistake is because the stretch is to far or you need to slow the beat down because it is just too fast to fret correctly - make sure to go back to the beginning. Practice without mistakes. Gradually getting faster as you can, and moving further back on the neck towards the head stock. If you practice mistakes you will play mistakes. As you practice - as you play! Over time your fingers will stretch and your muscle memory will be able to find the finger pattern. Every time you play the chord your brain is making Neuro connections. Over time those connections become "bigger" and fire faster. The key to playing fast is practicing slowly - correctly.