How long does it take you to feed your newborn? My son is a week old and taking 3 ounces a feeding. It takes about 20-30 minutes to feed him. Is that too long or is that a good time frame? I was wondering about the nipple speed (which is slow) but the bottles we are using only does Stage 1-Slow (0-3 months) and Stage 2-Fast (3-6 months). Thank You!