Have you tired changing before any feeds? I would say it will be okay to wait slightly longer if babies skin isnt too sensitive. For my 4months old, i usually change him only when his diaper is full. With that being said, every baby is different. Some babies would be very fussy and others wouldnt. Maybe you can try changing him before his feeds. In that case, he will have a clean diaper, milk and doze off. The basic needs are then met. Not sure if this helps. :)
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