I would like to check what action should be done or not done to keep the wrists armed as long as possible until impact. I made a video of my momentum and I noticed that at impact my wrists were no longer armed. I wondered if it could be due to a lack of support on the left side. So during the transfer there is not enough weight on the left and the hands cannot keep the angle until impact.
Richard
This is a common downswing issue known as early extension or "casting", Rich. Please have a look at this diagnostic video in Fixing Common Swing Problems, and if it seems to match what you are experiencing there are a couple of drills that immediately follow it.
Also, the Flying Wedge Drill and the 3-part Best Contact Drill are good ones for addressing this.
If, after, working through these, you are still challenged by this issue we can always arrange for a V1 Swing Video Analysis so I can put my eyes on your swing and offer a specific corrective action plan to get you back on track.