Breastfeeding - fussing and very quick feeds - 3 month old

[Poppety]

Hi everyone
I have a 13 week old baby who is EBF
She flat refuses to take a bottle or cup so can only take milk from the breast
We've never had any feeding problems and she's been a good feeder
The last two weeks she has started fussing at the left breast and bobbing off and on and getting frustrated after a couple of minutes, if she feeds for more than 4 minutes I'm lucky
Then today she's started getting fussy on the right breast aswell doing the same thing.
She feeds around 2-3 hours in the day and never longer 3 hours sometimes 1.5 hours.
I used to be able to feed her to sleep at bedtime as she would feed for 40 minutes but not any more and bedtimes are becoming a bit of a battle and it takes ages to settle her and she often wakes before properly going off.
I'm fearful that there's something wrong with my milk supply as I have no other way of feeding her
I've not had her weighed for a few weeks but she appears to be growing. No signs of thrush, colic or reflux.
Is this normal at this age??

Normal in my limited experience! Feeds start getting shorter as the baby becomes more efficient. It's not your milk supply changing. Their little brains are suddenly coming on leaps and bounds so more easily distracted by external noises etc. Keep at it, these fussy phases come and go, you'll know if she's not feeding enough as she'll wake up hungry!

It's exactly as tickle describes. Distracted and more efficient. I was used to feeds taking a certain am

...amount of time, and they just got shorter and more fussy. Some days I was really chasing DS around with my boob trying to get it back in his mouth. I was worried he'd starve or dehydrate or something - he didn't. He carries in growing nicely. Don't let this change worry you, it should pass in time.