Hi, My Baby Is 2 Months Old. I've Been Breastfeeding

Hi,
My baby is 2 months old. I've been breastfeeding him properly in the 2 weeks.later the supply was reduced. Then pd.dr suggested a powder called stimulac to drink along with milk. It worked out well for another weeks. Again supply got reduced. Then my gyn suggested the tab called lactare. I got enough supply then for couple of weeks. Now even after lactare tab and stimulac powder, I am not getting enough milk supply. My baby is starving now. Please help me on this.