Is the secret filling them up during the day? I don't need all night, but stints of 4 hours between feeds would be amazing! He starts to want to sleep around 9pm, and then is wide awake by 8am. At the moment he's feeding at 9pm, then 12am, 2am, 4am, 6am. Sometimes during the day he'll go longer if I let him, although I usually wake him to feed every two and a half hours or so. If I made a point of feeding every two hours during the day, would I get longer stints at night?