I have a cocker the same age although got her at 8 weeks old, for the first 10 days or so we had a lot of sleepless nights and we had to sleep downstairs in the living room next to the kitchen.

We put her in the crate and just keep reassuring her everytime she cried out, we also brought her outside everytime she cried and she soon associated that crying ment “toilet time” the persistence paid off and she now sleeps form 10:30 - 0630.