Don,
how often are you eating? I had to 'remind' (aka, nag) my husband to do his lunch protein shake for several months. Tracking online could be useful, too.

When you are up to it, and have a REALLY good blender, you can include raw apples (minus the core) in your shakes. My husband adds cinnamon and cloves to these and they are surprisingly tasty.

Best wishes and take care so you don't wither away OR get 'PEG'ed.
Maria