breastfeeding/ milk supply help

Jordan
Hey ladies. I've been having a decrease in milk supply lately and I saw a lactation consultant who wants me to pump or have baby eat 8 times a day (we were doing 5 bc he sleeps so long at night) (also have been doing mothers milk plus supplements and upping my water intake which I believe was the issue)
So my question is, what helps you ladies make more milk? 
Do you feed one side and pump the other? Feed both sides and try to empty completely in between feeds? Feed one side and let the other side build up? (She says not to do this because it's telling my body not to make milk)
What are some tips?