Add the Greek yogurt and cottage cheese to a blender and blend until completely smooth and no visible cottage cheese curds remain.
Add the strawberries, whey protein powder, cheesecake pudding mix, vanilla extract and 1 teaspoon lemon juice. Blend until completely smooth and evenly pink.
Taste the mixture and add additional lemon juice or zero-calorie sweetener as needed.
Transfer the mixture to a large mixing bowl and add the xanthan gum and ice.
Using a hand mixer, whip for 2–4 minutes until the mixture becomes lighter, thicker and visibly fluffy.
Spoon into a serving bowl and refrigerate for 15–20 minutes.
Top with fresh strawberry slices and serve cold.