Decrease of milk supply

3 months ni baby today. Recently I noticed na di ma tumitigas yung boobs ko every morning ( feeling puno ng milk ) . And si baby ang tagal dumede sakin. Normally 5 mins tapos na sya dumede but now umaabot ng 15 mins bago sya tumigil. Pansin ko din na sobrang lambot na ng boobs ko lagi kahit 2 hours na after ko sya mapadede. Is it a sign that Im running out of milk supply for my baby? Any suggestions po moms? Im currently taking natalac 3x a day and increasing my water intake pero wala pa din e