If you can do 3+ knee pushups then you should be able to just about do 1 normal pushup. Surely if you progress to 10+ knee pushups you can do at least 1-2 norma

If you can do 3+ knee pushups then you should be able to just about do 1 normal pushup. Surely if you progress to 10+ knee pushups you can do at least 1-2 normal ones. Maybe you are not eating enough protein to grow your muscles when doing the knee pushups.