Too soon to make & freeze food for Stage 3?

My RNY is scheduled for April 17.  I'm so excited to start this journey!  I'm debating whether it's too soon to make and freeze food for the Stage 3 portion of our diet?  I'm thinking things like chicken salad, tuna salad, soup,etc.  I bought some ice trays and was going to use those.  Any ideas you may have are greatly appreciated.  I'm just thinking about not wanting to cook when I first get home.