How much chamomile tea do you give?

So my son has colic and I have tried everything. I've tried mylicon, gripe water, swaddling, pacifier. My pediatrician told me not to switch his formulas because he does fine with it during the day so he is still taking similac advance. Someone told me to try and give him chamomile or peppermint tea. How much do I give him because I thought water is bad for them at his age he is only 6 weeks.