For pudding: Whip cream cheese, butter, powdered, sweet mix, and vanilla until fluffy. Soften gelatin in 2/3 cup milk for 5 minutes. Add remaining milk to cream cheese gradually while mixing. Heat gelatin in microwave until syrupy. Drizzle into cream cheese mixture with mixer running. Add xanthan gum and milk well. Set aside. Whip cream until stiff. Fold into cream cheese mixture. Set aside.