Is it 100% safe to wash once 30sec after changing a poo nappy to prepare my baby food or should i do twice?

i really have bad OCD with hand washing & germs and it makes me doubt 1 30 sec wash is enough to be able to handle and prepare food without making my baby or my family sick, i have just changed a poo nappy and as babies are very wiggly etc would it be 100% safe enough for only 1 wash? I feel the need to do 3 or 4 to ensure it, but im really trying hard to cut down on my washes :( Thanks x