Does baby respond to noises? If you're confident that hearing is ok then I'd give it until 12 months but in the meantime make sure you talk to baby lots, narrate everything you do, read lots of books and sing lots of songs. Repeat any noises baby does make to encourage them to keep doing it.
Mine is the same and I am so worried! You look online and it says they should babble by now or could be autism of course. Mine will occasionally go “bah” or “bbb” but only one time and not canonical which they should do. And only really the b sound, not da and certainly no ma yet.
Do they make any noises at all ? As that’s classed as babbling - my son has been babbling since 4 months