Ok my fantasy is winning 40-12 right now i need help cuz andre johnson is not playing so wht should i do?

i have austin collie he has reggie wayne i also have desean jackson and antino gates with mike tolbert while he has left eli nicks and steve smith vs the bears tonight and he is starting the bears D so his points will b low so should i leave it as it is or pick up mario maningham just to be safe aaron rogers i have now he will get a lil more points b4 his game is over what should i do? plz tell me