Have you tried just plain coconut milk? (lite for P2) I am very intolerant to dairy, swell up like a balloon, but can do coconut milk quite well. comes in cans, is easy to find and is relatively inexpensive. protein, carb and fat content are quite similar to heavy cream.
I did lite coconut milk, 1 tbsp/day all through P2 and it did not affect my weight loss (down 30lbs in 35 days)....granted YMMV but it's a thought.