I would keep an open mind and see how things go. If you plan to bf, you can always switch to ff. But it’s harder to switch to bf if you ff to start and change your mind.
My experience with my first was very much like yours. 12% weight loss in the first 48 hours and low blood sugar. We had to be admitted to hospital for 5 days and it was awful. She struggled to gain weight and only regained birth weight at 26 days. I had multiple bouts of mastitis and rounds of antibiotics. I ebf for 6 weeks but then had to start combi feeding because I developed what I now know was nipple thrush (at the time GP and lactation consultant both said it wasn’t so wouldn’t treat). All the skin peeled off my nipples and areolas and I had to stop because I had just these big weeping bleeding wounds and couldn’t latch her on. It was horribly traumatic. I also thought maybe I should just ff from the start this time because I didn’t want to go through that again.
Fast forward to now, my 2nd is 8 weeks old. I decided we would give bf a shot but I was prepared to ff if it didn’t go well. I didn’t think it was even possible to have such a vastly different experience than my first. He latched on from day 1 with no issues at all. I needed no bf support, we were just off and running. I did harvest colostrum and had several syringes of colostrum and have him about 1-2 a day as top ups in addition to bf the first 5 days (which I think helped a lot). He only ever lost 5% and was back to birth weight before 10 days. I did get thrush again but I knew what it was this time (exactly same as last time when they told me they didn’t know what it was!) and I demanded treatment. It was a bit annoying but that’s it. The first 2-3 weeks were tough, but after that, totally fine. 8 weeks in, bf truly is easier than ff for me and I’m so glad we gave it a go. I had no idea it was possible to have such a positive experience after the hell we went through last time.
I’m ter of sleep, it really is much more about the baby you get and not how you feed. My first who was ff from 6 weeks woke every 2-3 hours at this point and even after she dropped night feeds, didn’t sleep through til she was 3! My 8 week old who is ebf has slept 4-6 hour stretches every night for the past month. He’s just made that way, I think and has nothing to do with what I’m feeding him.
So that’s a long way of saying if you can, I would give it a go. You can always switch to ff if you want, but it may end up being much easier than you expect. Having everything go so well this time has also been really healing for me. I no longer feel the the guilt and sadness about my first experience because things have gone so well this time.