Im on my day 6 today. I was in the hospital for 5 days due to oxygen level dropping down after surgery. Im alright now. On my day 2 I already started to sit n walk . Cos it will help to pass gas out. So u will have less pain. 4oz of shake will make me full. It took around 90mins for me to finish it up. 15ml each time.. i still have a lil bit of pain on my left side. I still cant take capsule vitamins. Just a small size pill im good. U can try to walk around in your house for 20mins 2/3 times a day.