Here's my take...
1) You might need a stronger acid reducer.
2) If you are able to get in 60 grams of protein a day already, I would seriously consider working on a 3rd shake to get even more protein in. 60 grams a day has never felt like enough for me. I'm 4 months out, and most days I get about 90 grams of protein in. Some doctors even feel like more protein minimizes the risk of hair loss postop, so it definitely couldn't hurt, especially if you're only getting in about 300 calories a day right now.
3) I did use sf jello, sf chocolate pudding, and sf popsicles to help between shakes and fluids. It's amazing how filling jello can be at that stage.
4) Are you easily getting in that 60 oz of fluid a day? If so, can you up it? I try for 100 oz a day, and it really helps me to feel more full.
Of course, all of this should be with your dr's approval, but IMO there is nothing wrong with making yourself more comfortable in this phase, especially if it means adding protein or calorie free snacks.
Highest weight: 277 Starting Weight: 250 Surgery Weight: 241 Current Weight: 130
Goal Reached in 10.5 months :)