Hes beginning to die due to Tuberculous, which is beginning to make him cough a lot more, and also makes him dedicate the time he has left to others. He's still with the gang, sure, but he starts acting more charitably or compasionitly, he starts giving his time and money to people in need, absolving debts instead of collecting them, donating into the church in saint denis, and refusing cash awards for helping people, overall becoming a better man now that he knows he basically has a time limit