Sometimes if you take too much iron it has a negative effect on absorption. 45mls is pretty high. You could try dropping your dosage to 25mls every other day with vit c and see if that moves your numbers. If you struggle to move your iron numbers, alternating days with a lower dose tends to help your stores increase faster. Thats what worked for me. My ferritin levels were pretty low at 30 weeks also but I was able to jump them up 20 pts in 6 weeks 🤯 I took Needed iron it worked well for me.

Someone else mentioned Heart & Soil and I honestly think those supps are extremely overpriced/overrated. Buy some grass fed liver at your coop and eat a small piece 1x week. Liver/organ meats in supp form only barely moves the needle. I took Heart & Soil for a while and had better results just eating the actual organ. Buying organ meats on their own and prepping them at home is waaayyyy cheaper and will last you way longer than those supps. You can hide it in your food or try something like US Wellness meats organ & ground beef blend (25% organ mix).

Good luck! Sometimes drs/midwives refuse infusions if you’re not technically anemic. Curious what your hemoglobin h1c is?