My heavy cream experiment ends (maybe) this Thursday. I found the same thing you found earlier that having one after a meal is a bad idea. So I just sip on one (2000 calories each) morning and at night over an hour so it doesn't hit me and that seems to have helped a lot in "keeping it"
I may keep this going past two weeks though cuz I'm loving the fatter empty belly!
(the image is from this morning dead empty to inflated by air)