What are some breastfeeding tips?

Hey guys so I’ve been super bummed out lately cause I’m trying to breastfeed my son and it isnt going as well as I hoped it would like it did with my daughter. I’ve tried mothers milk tea which helped alot when I was nursing my daughter. I’ve tried fenugreek capsules. I’ve been pumping every 2 to 3 hours when hes not nursing or wake and my supply went from 5 ounces in one boob to barely a half an ounce… what can I do to help. This is really depressing me and I feel horrible about it when my nurses he can nurse anywhere from 30 min to 1 1/2 hours… and then be hungry again in an hour. Hes is only 2 months old tomorrow. I’m not sure what to do