I have had 2 very different feeders - DD1 was like your DD and needed to be woken to feed and I had to have an alarm on my phone to make sure she was fed at least every 4 hours. DD2 on the other hand fed every 2-3 hours without fail and was demand fed. Both were exclusively BF for 5months and were BF until over 1y. They still have very different eating patterns now! You just need to work out what your baby wants and work with that - and make sure that she does feed every 4 hours minimum at this age.