Yes, yes, exactly what i am doing for a long time, deliberatley. My brain works at night, i usally can not get very good sleep, but i do see lot of interesting dreams and somehow the solution presents himself at some point. Be prepared you may forgot the solution when you wake up like dreams you saw. So try to not mix them in the middle of the night ;-) And no, i cannot help with that, i can separate them somehow.
Having a notepad and pen next to the bed to quickly jot down ideas helps, it's low tech but it works for me.