Weaning support

Hi ladies, For the last week or so my husband has put down our baby for a change and she had managed to fall asleep with a lullaby and her light up stars teddy bear. I have been feeding her to sleep for 17 months now so this is a huge weight lifted off my shoulders. The has woke up during the night a few times as she co sleeps and she has wanted to latch on. I managed to try and sooth her last night but there was alot of protesting and crying. She hasn't been breastfed since last night and I just feel so guilty. I'm trying to stop and wean her and this could be it because I have gone since last night and she's ok so far. I nearly gave in today because I felt so bad but I'm keeping strong. Any tips for tonight And how to soothe her? She co sleeps and always has done.