Did you follow your pamphlet’s instructions on what to do when you miss pills? And did you take the missed pills when you remembered? There’s no way to predict when it’s going to stop unfortunately.
Missing pills can lead to experiencing unwanted side effects like irregular bleeding, cramps, sore breasts etc
You can take a break if you like but just make sure you have taken at least 7 pills correctly before the break for your protection against pregnancy to be maintained. A break week is not guaranteed to change your bleeding in the way you want it to either