A little help ladies FTM

Any body else 8 week old baby sleeping a little more but also still stay away the hour and half or so. Also she will sometimes eat less she will eat 2 1/2 ounces and be done instead of her normal 4/5 ounces. She still sleep 3/4 hours and not and wake when she wants to eat. But I have noticed that at this 8 week mark she will eat less at some feeding. She will be a month tomorrow and have doc appt. Wednesday.