Help not enough

My son is one month old I have been breastfeeding but when I breastfeed I just know that I'm not making enough milk I have had to substitute more milk by giving him a bottle I've been taking Fngreek, blessed thistle ,mother's milk, and I've been eating lactation cookies I also have came down with a cold I don't know what else to do I'm not making enough milk I've also pumped three times a day what more can I do and is it too late for me to make more milk.