Good Morning from Georgia!
Definitely call your surgery Dr. and Team. Have them email you your plan for Pre-op bloodwork, an outline of your Pre/post diet example, suggested food tools (blender, measuring spoons/cups, food scale, kids utensils, plates, bowls, etc... Also vitamin suggestions.
Bottom line you are paying them for a service. If you feel they are not meeting your needs, take your business to another place.
Best of luck and congratulations on choosing to take care of you.