breastfeeding question

So my son is 4 months old and I breath feed him for a little over two months. I stopped because I thought he had thrush and he was fussy all the time but I REALLY want to start again I miss the bond and its so much healthier. Just how do I get my milk back he latches but let's go because nothing comes out. So any advice would help

Find a LC for one and this site has some great info
http://kellymom.com/bf/got-milk/relactation/

Pump and keep trying to get him to latch.

Doctors can prescribe pills to bring milk on people who can't produce and adoptive parents that wish to breastfeed use them