Low Supply

I’m six weeks post partum and experiencing a low milk supply. It seems after speaking with a lactation consultant that the issue is mainly caused by my little one being preterm and my body and his are both playing catch up. LC has me feeding on both sides then immediately pumping while feeding him and previously pumped milk and formula until full. It’s very hard to manage so I’d love so tips and advice or at least some success stories with this method to keep me motivated! On our weighted feed he was only getting a total of two ounces. I’m on day two and the amount I’m getting from a pump post feed is actually less than yesterday which feels discouraging. Thanks in advance for any advice or support!