I did WW online while I was BF'ing and I think it was about 1900 - 2000 calories a day that I was on (I started at 70kg and height: 158cm). It said that you weren't supposed to lose more than .5kg when you're BF'ing... and I found apart from the first week I didn't lose more than that.

I've also tried putting BF'ing into CK (which I'm now using - but no longer BF'ing) and while it initially says you shouldn't (go see your doc etc) you can actually do it - you just keep going past that screen and it does adjust your calories up. I think I went from WW points 28 (or 29) to about 21/22, and on CK I went from 1900/2000 down to 1300 calories (not BFing). Does depend on your exercise and your own height/weight of course too - I wouldn't go off what anyone else was consuming. Does that help?

Oh and GEEZ I wished I'd lost all the weight while I was BF'ing. In retrospect those calories were SO easy! The other thing too is that with only 3 kilos to lose, it may be harder anyway. I had a heap to lose and it did seem to fall off pretty easily.

The only other thing I can think of - are you eating good cals, IYKWIM? I found I could still eat a bit of crap if I tried.... and if you're eating crap (but within your cals) late at night that might impact mebbe? Not sure why it's not coming off otherwise... GL in working it out.