Breastfeeding no weightloss

So I haven’t lost any weight since the initial weight I lost leaving the hospital. I’m almost 15 weeks pp and i still have 23 lbs to lose I only lost 13 lbs 7lbs which was baby and I’m assuming the rest was placenta etc. I’ve read online that when breastfeeding there’s a significant amount of weight loss after 4 months. Is there any truth to this? For the mommas that have ebf have you noticed a time period where you lost more?