My DD was about the same age when she got her cold too It's horrible, I really feel for you. We elevated the bed to help with her nose not getting too blocked etc and drainage. We also used the humidifier but just a warning, we used it every night and despite airing out the room all day every day we ended up getting mould on the ceiling. Annoying!!

I also wiped down the cot in the parts where she couldn't reach with the same stuff I put in the humidifier to help clear her nose and also made sure to keep up the fluids, it seemed to help.

Hope she gets better soon.