4 wk old

[taren]

i have a 4 wk old he sleeps at night from 10 till 12.30 then till 2.40 then 3.40 then 5am is this ok

[Poppity]

Sounds ok to me!
He's still very tiny, the gaps will start to widen soon. You probably won't get a proper pattern emerging for some time yet.
If you're tired(which of course you must be!), go to bed in the day time when he is napping if you can.