Change in feeding- is this the norm?

[Peanut03]

Over the last 5 days my 16 week old DD has started being really fussy over the last 2/3oz of her bottle (she is mix fed, mostly EBM). She pushes the bottle away, then grabs it back, takes a couple of sucks, then pushes away, arches her back and cries. Then she tries to grab it back and the whole thing starts again! This goes on for about 10 mins until we just give up. I can't tell if she is still hungry, or just sucking for comfort, or what. She brings up wind as per norm after each feed, so I don't think its trapped air. So what's going on with that?

She was really grizzly on Saturday, missed 2 feeds and barely touched another. Then yesterday she had 2 mammoth naps (2.5 and 3 hours) which meant she missed another feed. When she's awake she is alert and seems fairly happy, but just not quite her normal self.

She is my first, so can someone tell me-am I just worrying over nothing, is this just a development thing? The change in her feeding pattern is really getting me anxious and I'm not sure if I'm blowing it all out of proportion.

Thanks in advance...

Bump

Hi, Peanut. Babies do change and go through grizzly, grumbly patches....it may be she is feeling a little under the weather, fighting an infection (which would account for her longer naps and her slight loss of appetite). She is clearly not actually unwell, as you say she is alert and happy. It's the sort of thing you might get reassurance about from the health visitor, or the baby clinic.

My ds has started the same thing at 13 weeks, I just play every feed by ear and if he doesn't finish it no big deal. He looks like he's teething as I can see a bump of a bottom tooth so I thought that might be the problem.