Milk Supply

Hi mummies. Any idea how I can boost my milk supply? I’m only a month post partum. Yet my milk supply is getting lesser everyday. Used to breastfeed but baby had jaundice and doctor advised that breast milk might cause jaundice too depending on what mummy eats (especially ginger and red dates). Yikes.. my MIL put lots of ginger in my food to release gas. So I stopped taking ginger and stopped breastfeeding for a while to clear my body of ginger. Gave LO formula. Tried to still pump my milk but then now milk supply is getting way less. Like just 40ml. What can I do to boost my milk supply 🥺