I agree about adding some milk to thin out the shakes. I do that. I also add a pinch of salt sometimes. I can do about 4 oz of protein drink at a time.
I also have a good broth that I generally have for "lunch" and "dinner" and I put a non-flavored protein in the dinner one, so that helps me a lot.
I'm just dipping my toes in puree, so I'm not really eating enough of that where it is worth putting protein in it - there's just not enough food. So, for now, I'm stuck with the shakes, clear protein, and broth. There are a ton of unflavored proteins out there, though, that maybe you could put in a warm drink?
I am supposed to do 2 multis a day and I do 1 chewable and 1 capsule. I tried taking apart the capsule and it was worse than the chewable!