Advice for a strong start?!

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So breastfeeding went so badly with my first (I couldn’t get my supply up, it was so low the most she ever got at a weighted feeding was 10ml between both boobs!!) that I was almost not even wanting to try with this baby (I’m 27+5). The more I think about it, the more I would really like to try. Does anyone have any advice for me to give me a strong start from the beginning?