You could keep pushing yourself and have no problems. But once you do cross over that line and create a problem, it will be too late, and their will be no warning sign telling you before then. The rules and schedules doctors set may be conservative, but they are that way for a reason. They would rather error on the side of safety than gamble with your health and well being. Most people are not even allowed purreed foods until 2 weeks post op. So why push yourself? You'll be eating regular foods before you know it, just less of them. You've got the rest of your life to eat. These few weeks are about setting yourself on a healthy path.