If I'm not mistaken, there are 2 vaccinations for 1 yr old baby; MMR and pneumococcal. you can also get flu jab but best to check with your pediatrician.
To sterilise bottles, I always bring my own travel kettle, container with lid (bought from IKEA, brand is SAMLA), bottle brush and my washing liquid. I dont't like using sterilizing tablet so I just buy those 5-l drinking water from supermarket, boil it and pour the hot water into the container and cover it to sterilise all the bottles.. Once the water is cooled, I will drain the water and keep the bottles. Alternatively, you can buy pigeon travel steriliser but can only sterilise 2 bottles at a time. dont't use mineral or distilled water for baby's consumption. Find those that is for drinking.
Apart from baby's basic needs such as clothing, diapers and wipes, I do pack these items as well:
- small first aid kit
- ointment and baby's medication (panadol syrup, nose drop n etc)
- nappy rash cream
- nose cleaner
- cotton buds
- sunblock lotion
- mosquito repellant
- fever patch
- favourite toys and pillows
- clip-on fan and lots of batteries
Just remember not to pack too many activities in one day. Take your time and enjoy the trip.