Doctrine has not been put on the table. Pope’s can’t change settled doctrine. Francis ain’t changing anything. Please quit worrying about it. He couldn’t even if he wanted to. On matters of moral and faith the Pope is infallible, which means he makes no errors. In other words all the Popes that came before Francis were also incapable of making error.
Papal infallibility is a dogma of the Catholic Church which states that, in virtue of the promise of Jesus to Peter, the Pope is preserved from the possibility of error[1] “when, in the exercise of his office as shepherd and teacher of all Christians, in virtue of his supreme apostolic authority, he defines a doctrine concerning faith or morals to be held by the whole Church”.[2]
You still seem to be confused on the differences between doctrine, dogma and papal infallibility. Hang in there, you’ll catch on.