Congrats on your baby, well done - a 30h labour must have been exhausting! And you have done incredibly well to persevere with giving her breastmilk. Please give yourself a pat on the back and feel proud of yourself
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As for relactating, if that is what you want then it can be done. It is not too late.
The key is feed, feed, feed. The more you feed your dd, the more milk you will make.
Can you go to some breastfeeding drop-ins? Your HV should be able to tell you about local ones. But, importantly, go to ones run by NCT/BfN/LLL/ABM volunteers, as these ladies are the experts and absolutely the bee's-knees when it comes to breastfeeding support. BTW they will not judge you for your feeding methods, but help you go forward in the way you feel is best for yourself and your baby.
Your dd is still young enough to have the 'breast-crawl' instinct. This is where she will, given the opportunity and plenty of patience from you, seek out the nipple herself. Best to do this when she's not frantic from hunger.
So have a Babymoon. Undress both of yourselves as much as possible and go to bed together. Plenty of relaxed skin-to-skin contact. Feed as often as you like. Feeding lying down and in a relaxed, unrestricted manner, will give you and dd the opportunity to learn about each other and I'm sure that you will, within a few hours, see her searching out the nipple for herself - something that is much harder to do if it is covered with clothes and she has to wait while you uncoil your bra to give her access.
Set up a Sofa Station. Plate of healthy snacks (eg fruit and sandwiches) bottle of water, book, TV RC etc all within arm's reach, and do nothing but feed and relax.
You can either start in the morning and hold off giving a bottlle as long ad possible, or you can aim to skip one bottle at a time. Either way, breastfeed her before every bottlefeed.
I must dashnow, but I just wantto say also that I relactated when ds1was 6w.
Don't be afraid to access as much support as you want. The breastfeeding supporters are fantastic women - I cried on many of their shoulders, and laughed with them, too.