When do they stop cluster feeding?

[Picante]

I can't remember what happened with ds, and I'm wondering when dd (almost 6 weeks) will not feed continuously from 6 til 9pm...

I don't mind doing it... especially as it usually means she's only up once in the night, but I'm wondering how long before I can bring her bedtime earlier? And how?

IIRC, cluster feeding stopped at about 10-12 weeks with my dd.

Thanks!