Alhamdulillah, bagus niat nak fully breastfeed kali ni! One cup of coffee a day is actually fine, caffeine dalam breast milk is minimal, tak akan affect milk supply mu, tapi lebih penting is making sure you're eating enough, minum banyak air, and rest properly, sebab tu yang actually influence production lebih. Since first time didn't work out as planned, kali ni maybe boleh try engage with lactation consultant or midwife from the start ja, sebab sometimes it's about positioning and latch rather than actual milk supply, worth exploring for peace of mind, and who knows, second time around boleh jadi lebih smooth with the right support.