Weaning off from night feed

I have been hearing friends' babies and Keith when he was baby drank milk at 10plus and will sleep thru the night and wakes up around day break to drink. Not sure if we will be lucky parents this time. This is becos this week we take care Royston & he wakes up at 6am plus to drink his milk milk. Charlton will still drink at 1am plus or 2am plus then wakes up at 5am to 6am to drink.