Soups were my saviour because those shakes were disgusting & bone broths tasted too salty. As for feeling dizzy, lacking energy, etc. is to be expected you just had pretty major surgery. Think of all those staples & stitches holding your tummy together. Your body needs time to heal & recover. The surgery itself is quite a shock to your body too. Rest. I spent a lot of time on my couch & just light pottering around my house & taking shirt strolls. No way could I have cleaned my house. Besides being physically unable I would not have wanted to compromise my healing.
Add an electrolyte drink to your fluid roster to give you a bit of a boost. Yes, some people can go back to work after a week but others need longer because we all recover at our own pace. (I needed all of 4 weeks & returned part time due to low BP making me lightheaded & doughy in the head - always had a pre disposition to low BP.)
Any cream soup is fine: chicken, beef, pumpkin, mushroom, broccoli, cauliflower, potato & leak, tomato, etc. Some people find tomato too acidic but give it a try & see how you go. I diluted the soups (extra milk or water) to make the flavour less intense & thinner & easier to swallow plus it meant I was drinking more fluids. I also strained them to ensure there weren’t any chunky bits or bits of herbs or vegetables. You can also eat the broth part of pho, wonton soup, etc.