It will take time for you all to adjust. I haven't had surgery yet (it's a week from today), but I have had to be on a liquid diet and I have tried to make things as normal as possible for the DH and kids. I did ask them to go out and eat the other night while I went grocery shopping...just so I didn't have to sit there and watch them eat.
I wish you luck in this journey, it is yours as well.