I just started gaining and drinking heavy cream again. I did a gain a few months ago with heavy cream. I gained about 30-35lbs. But then hit a plateau and couldn't seem to get passed it. So I took a break of a few months. I saw my Weight go down a little but then went back to where I hit the plateau before. So it seemed that bit that I lost came back on its own or was a delayed gain. Seeing that I'm trying gaining again. Maybe starting out at this point will result in breaking the plateau. I've definetly noticed changes. Which is what caused me to try again. I'm excited for the potential. I've noticed that chugging a smaller amount of cream combined with eating something, especially carbs/sugar helps with gaining. I try to be careful with too much sugar as I want subcutaneous gains. I guess I will see.
best luck to everyone!