You will probably find that this is a temporary thing due to a growth spurt. As k8 said, current guideline say 6 months, in my day - not that long ago, it was 4 months, in any case 8 weeks is too early - are you sure that she is just not windy - sometimes this can look like baby is hungry and they will feed but that is not actually the problem. I am presuming that she is on formula and that there is no issue with you not producing enough milk, so in that case you can get formula specifically for hungrier babies - you should never be tempted to make up the formula stronger - this is dangerous for your baby.
Definitely speak to your health visitor for some advice as well.