This dream implies that you are anxious or eager to finish something recently, so you dream of steaming rice in a steamer, and steaming rice needs fire, which also implies your impatience. Dreaming that knocking over is your anxiety. On the one hand, you want to "cook the rice quickly", on the other hand, you are afraid of accidents, which will lead to all the previous achievements being wasted (uncooked rice can be seen that you are worried that all the previous achievements will be wasted).
Let me give you a suggestion. Slow down and get down to work. Don't be too hasty As long as you are practical, everything will succeed.