I'm just wondering if you milk output, is diminishing?
When she was fussy... was it when at your breast or via a bottle? If it was when she was at your breast... maybe your milk output was not as it used to be? Thus, she senses this?
Or maybe, she is just naturally weaning and does not want to be at breast? This can also happen... my son was like that.
Or, is she at the breast and seems frustrated... or is she ACTUALLY drinking? If she is actually drinking and you hear her swallowing, then she "is" actively nursing.
Observe her cues... and maybe she is self-weaning?
By now as well, she must be drinking whole milk? Does she drink from a sippy cup as well, or only bottles? If she is not drinking breast... she should be drinking whole milk since she is 14 months old. (or oh yes, my son was on Formula and milk at this age).
Also, sometimes babies seem fussier during feedings, because they are teething. Or, they sometimes act this way because they are ill.
But then too, every day can vary... and when having growth spurts, a baby can have more of an appetite. At about 15 months old, is a growth spurt time.
Breastmilk output is by supply and demand... if you cut out feedings/pumpings your body will adjust to that... and weaning will occur.
Do as you feel best... but also try to figure out why your baby was fussy on Sunday... taking in 3 oz. or less at daycare is not much... so I would imagine she would need to be drinking other things like whole milk. Or, maybe it is because she is too full to drink her bottled breastmilk, especially if she is given solids first, then her bottle.
Does your daycare give the bottle first or after the solids? This too can make a difference...
well just some ideas,
all the best,
Susan