Lovely to read about the babies - sorry a few tough times, sicks and coughs around. At least it's Spring now and we aren't at the start of the winter season.
Re colds, I am novice mum, but Jacob had his first cold. He was 10 weeks though which helped, as some of the remedies we used were for 3 months plus, so just used less. We used
Baby Olbas Oil - few drops on tissue, on his carry cot or near by
A Sudafed plug in menthol thing - just for an hour before bed time.
Both of above not recommended for under 3 months.
Kit we bought from Mothercare containing thermometers, scissors etc (£14.99, blue see through "suitcase") also had a "nasal decongester" - didn't use it, but is ok for any age I think. Think it just pushes a little air up the nasal passages to shift the snot!
Lay him on his side (during day), to shift the snot
Cool boiled water - the cloying effect of milk doesn't help the snot, but a sip of water is nice for clearing out the mouth and keeping baby hydrated.
I've also heard that taking baby into the bathroom when you have a shower helps, as does regular baths for him.
Sorry for over use of the word "snot"...have lost all inhibitions these days, even emailing dh at work to describe a "cheek coverer" poo. Someone give me a smack!