My lb is almost 6 weeks, EBF, has a bottle of expressed milk most nights from my husband. His first stretch of sleep of the night is usually 3.5-4 hours, which I’m so grateful for, but after this he can be up 1.5-2 hourly which I just don’t understand. Has anyone else had this issue? Is it a developmental thing? I’ve tried another bottle of EBM during the night but didn’t seem to make a difference. He’s already had his 6 week growth spurt around week 4, where he was feeding 2 hourly TIA x