need advice on what to do

How about Greek yogurt?  It's high in protein by itself, but you can add protein powder to it to make it even higher.  I use vanilla protein powder plus a Crystal-Lite packet to make it flavored.

You need to call your surgeon and he needs to continue trying to find out what is causing this problem.  Something is wrong if you cannot eat anything but liquids.  If your surgeon won't help you with this problem, you need to see another doctor.

Let someone else in your family do the cooking temporarily until you get this under control.

I agree with Kelly - let someone else do the cooking for a while.  My sister cooked for a week after my surgery and sent food over for my kids.  Then my daughter started cooking stuff for her and her brother.  It helped so much.  I can totally identify with what you are going through - i cried the first time I went grocery shopping after my surgery. 

As for not being able to eat anything - has your doctor done and EGD?  I couldn't keep solid foods down and when the doctor did the EDG he found a stricture (scar tissue closing up the opening from the pouch to the intestine).  He used a balloon to dilate it and I have been much better.  It was only two weeks ago that I had that done and I am still having a tough time trying solid foods.  I can only eat two, maybe three bites before I have to stop.

I will keep you in my prayers.

I am the only one here that can cook my hubby works 2 jobs and my mom is disabled and my children are very young