Hi Emma
Ditto to tiktok about breasts not being completely empty - I meant that when dd has fed from one side for longer than a few minutes, it feels a lot more comfortable and less heavy than it did before! The key is not whether the breast is empty, but whether baby has had plenty of the fatty hindmilk. You'll know when it's working as baby will be more settled when feeding, will feed for a bit longer and will start to go longer between feeds, but like I think I said earlier, it took a good 2 weeks (and quite a few tears!) before I noticed a significant difference.
With dd1, I never felt letdown or the milk coming through - I just knew it was doing as I could hear her gulping and when she came off, she sometimes had a milky mouth! With dd2 it's completely different, I feel letdown all the time! So, my point is not to worry if you don't feel anything, as long as she is putting on weight and having wet and dirty nappies, then she is getting what she needs. With both babies, I've felt different on both sides and according to my sister (who's a breastfeeding counsellor) that is perfectly normal too! My right side always feels fuller and gets sore a lot easier than the left, but both did a lot of impressive squirting before things settled down!
I also wouldn't worry about reducing it too much, as it all works on supply and demand - once she is getting enough from one breast in one feed, she'll settle between feeds for a decent period of time, so when she asks for the next feed, you'll put her on the other breast - she'll take what she needs from there and your supply will settle down.
Definately get some advice if you're strugglin or want some reassurance that everything is OK - I went to my sister as she's a breastfeeding counsellor for the NCT, but they are available to everyone even if you're not a member and will come out and watch you feed if you need them to. I believe Little Angels and La Leche League do the same.
Keep at it - it WILL get better.
Sally