Keeps waking up at night

CL

So my little girl is 14 weeks old and used to sleep good 5-6 hour chunks at night and sometimes even through the night.

For the last couple weeks she has stopped taking her dummy and has been waking up crying every 2/3 hours at night😩 the only thing that will get her off to sleep again is the boob! But I don’t want her to be drinking too much and of course I don’t want everyone to be awake every 2 hours!

What do I doooo??? Do I keep trying the dummy?

Do I keep feeding her?

Is it because she’s going through a leep? Will she get the hang of it again😩

We have white noise, dark room etc nothing has changed to what she has been used to