Help! My supply is low!

I love being able to nurse my baby! We’ve been going strong since day one - I was lucky to produce enough and he was a quick learner. All was great until I went back to work. Even then I was at least replacing (most days) what he ate. I was so excited the couple days I over filled! It seemed to be going well - even though I hate pumping. Then he hit 3 months and everything completely changed! Not only has he had to take daily from my freezer stock but I am lucky to pump 3 ounces per breast where as just a week ago I was pumping 8 ounces. I’ve also noticed he is waking up more during the night acting hungry. I’m soooo not ready to throw in the towel.

How can I boost my production??? Has this happened to anyone else? Should I just suck it up and supplement or can I turn this low production around somehow?