2 week old baby and supply is still low

Bee

I wanted to breastfeed my baby but my milk didn’t come in right away, docs and nurses told me it may take a few days. Baby latches every now and then but then he loses interest since nothing is coming. I’m pumping twice a day and barely coming out with half an ounce per session. Considering My baby is already two weeks, have I lost my chance to breastfeed? I just ordered some lactation supplements hoping that it’s not too late and he’ll still latch when the milk comes through, if it comes through.