All babies are different of course and they tend to need more sleep the younger they are. Here are some guidelines:
Babies of this age tend to sleep for 15 -18 hours in a 24-hour period. This sleep is closely associated with feeding, and your baby will spend these early weeks in a milky dozy state.
6 weeks – 3 or 4 months
By this stage many babies are beginning to sleep for longer periods and to feed less often. It is usual for a baby of about 8 weeks old to sleep for 6 hours at night without waking for a feed, although many babies have managed to do this earlier and some will be a little later.
Her total sleep requirement may have dropped slightly, to between 14 and 16 hours per day but sleep will be becoming deeper and lasting for longer periods.
By now it is likely that she will be sleeping for between 6- 10 hours at night, with 2-3 daytime naps. This should total about 14 -15 hours.
Your baby requires 13- 14 hours sleep in a 24 period. This is usually made up of a night-time sleep of 10-12 hours plus a morning and afternoon nap. No longer needs a night feed.