Sounds like a miserable time
I had jenna at the dr last week cause she has a nasty cough. The dr said they really dont do anything with babies under 12 months as they dont like medicating while babies are still within SIDS risk zone. So she said unless it becomes pneumonia...... I would imagine there has to be something to give a 4 yerar old though. have you been to the pharmacist?
The one think I've been dead surprised about is that Jenna has been coughing alot at night, and doesn't wake up! So surprising cause its a really deep raspy one too. I guess because she's so young huh?

I hope bubs gets better soon - and I'd try a vapouriser myself.

Fi