I have just given her formula but she's just not seeming full

you should not put anything in her formula unless directed by a doctor and medically nessesary. Just feed her until she is full, bottom line. Sometimes she will eat more and sometimes less... My monster is 5 months, sometimes eats 6 oz and sometimes eats 3.

Yeah you're right but I just hate feeling so confused

try to give her another oz , at a month i started giving my baby cereal in her formula at night and she was already drinking 4 oz then i switched to giving her babyfood in her formula at night and a little but of cereal in her formula during the day , im not telling you to do that though only you would know whats good for your child

my mom said something about a film in her mouth when she eats and sometimes it needs she just needs something to wash it away but I don't think giving her more formula is going to help what the formula caused right so what else should I do if it's that

I guess I will have to try it by an other oz

I would go up a little more if she's still hungry.

My 4 weeks old eats 4 oz every feeding. I'm starting to put a pinch of rice cereal in her milk.

ok so what else could be the cause if she's not actually hungry

wait maybe 10 minutes, if she still acts hungry feed her more.