Best maternal milk for baby weight gain

Hi all, my baby is really small, weighing about 1.6kg at week 33. I have high blood pressure due to poor uterine blood flow, hence baby’s weight gain is poor. But gynae says it’s not full blown pre-eclampsia yet (cos no protein detected in my urine for now so still not considered pre-clampsia, though it seems like it’s on the way there) Like to ask what is the best maternal milk to help with baby’s weight gain? I have already tried drinking avocado milkshakes, eating eggs, drinking more milk n eating granola oats for the past week plus but baby’s weight gain is still slow. Will be starting to eat durian soon too. Anything else I can do?