My bf 10 week old DS is hard to settle in the evening. I bf him around 7pm, and put him down once asleep, he'll then wake frequently (approx every 20 mins) and I feed him each time. Usually around 9-10pm he goes down for the night. I assumed this was just cluster-feeding. We give him a formula dreamfeed at 11pm approx.
Last week I hurt my back and was taking strong painkillers. I dealt with this my expressing & discarding some of my breastmilk (if soon after taking a tablet) and giving formula. If he had formula at 7pm he would sleep straight through til the dreamfeed. Now I've stopped taking the pills & am bfing at bedtime he's gone back to the frequent evening waking.
Why do you think this is? Is my milk supply low in the evenings? Should I top-up with formula? I know demand should increase my supply, but it doesn't seem to be working!