Gaby'smum, I have always started dreamfeeds/top up feeds from 3 months till about 6 months, for us it has worked and any other waking through the night has been solved by putting the dummy in.

We don't take them out of the room or put any lights on other than a very low night light, so they basically never really woke right up, just sat them up gently to burp and then back down again at about 10pm

Sounds like it could worth a try!