When you think you have turned far enough, turn some more. Eventually, you will get used to what a full turn feels like. It's a body awareness thing. Short turn(ers) are doomed to all kinds of problems with lack of hinge, failure to set the club, balance, etc. Not to say some are not able to play well doing a short version of the turn, many do and some pro's certainly do.
Why doom yourself to this, it makes you look bad and you will mostly play bad doing this.
Once again, with a club held across your chest holding with both hands and the butt of the club pointing left or towards the target, turn until the end of the club nears your right foot. This is a fuller turn.
Posture may be limiting your turn, get your posture right first, then begin taking fuller and fuller turns allowing the left shoulder to come under your chin which is held steady and away from your chest.
Google posture and address and check out the way the pro's do it.
Turn and turn some more while keeping the head steady and the spine angle the same. You will begin to hit awesome shots.