Best bottle to supplement breastfeeding for newborn

I am trying to breastfeed but my supply is very low. My son (1 week old) was losing a lot of weight so we needed to supplement with formula. His suckle is also very weak so doesn't stimulate the nipple much. I want to know which bottle/nipple is best for dual bottle+breast. I heard there are some nipple that only release small milk when baby sucks so it is similar to breast (instead of constant flow even if not sucking). I am using mostly Philips Avent bottles and equipment. Thanks for the advice!