Need some advice

My daughter is 6 weeks old, she has had alot of stomach issues since day 1. She is on similac total comfort but still has alot of gas that seems painful by the way she cries it hurts me to watch her go through it .... she is also on famotidine for reflux (has trouble feeding because of this 😩 ) My mother in law has been telling me to give her chamomile tea that its supposed to help with stomach issues. Has anyone actually tried this for a baby this little? Did it really help? And how often and how should i give it to her?