I find that if we're out he will sleeps, like today was up at 7.30 for a feed then slept 8.30-10, we went out at 11, slept till two, feed had some awake time then slept till 5, that's because we were out. If at home he'd just cat nap, nothing longer than 30/45 mins. I've also read that babies eating well during the day helps sleep at night. He has dropped back to 3oz every three hours so today I changed to a fast flow teet and he's done 5oz twice and once 3oz. We'll see what tonight brings!