Fussing and Tugging

[Kmn]

As Chloe gets a bit bigger and stronger she may well fix this herself.
In the meantime you seem to be doing the right things - giving her boob first, etc. There is a risk that "fussing" is not providing you with enough boob-stimulation to make enough milk - so expressing as often as you can until she really gets sucking is probably a good idea.
And it is preferable to "top her up" with EBM rather than formula if you have it.

BUT - she is still a little tacker, and it is totally normal for her to feed every 2-3 hours during the day and also to need a feed or 2 during the night. In fact the night feeds are part of increasing supply!
So - horrible thought I know - but middle-of-the-night expressing would also boost your milk supply, and middle-of-the-night feeding if she is awake would be a good thing. Being grumpy for several hours a day is also normal for new babies. So is cluster feeding (where they want to feed very often, like every hour for a few hours, and are unsettled) - so if she seems hungry, it may be best to give her the boob back again, rather than think "you only stopped sucking half an hour ago, how can you be hungry".

Have you had someone recently observe how you are feeding her - imperfect attachment will also lead to fussing and so on. Some clinic nurses are also skilled in lactation, or an independent lactation consultant (there's a list available here: Australian Lactation Consultants Association Ltd - ALCA), or a day-stay at a lactation clinic could all help here. And what you see as "fussing" may actually not be "I can't get milk out of this boob, Mum", but some other issue.

There is no reason to change to formula entirely whilst you still are making some breastmilk and are able to feed her OK - the only issue seems to be that you are not sure she is satisfied. And you are taking steps to deal with that. There are quite a few people on this board who combine BF, EBM, and FF successfully.

But beware of using formula too often - that can then lead to a sort of spirally effect, where your boobs make less and less milk. Once you have had her weighed again you may be able to reduce the amount in the 2 bottles.

Sorry for the brain-splat. Hope there's something useful in here

Hang in there
Kate