I took my Baby to Singpore when she was 9 months in July. The air pressure makes BB uncomfortable. It would help alot to feed her milk during taking off.
BB bed and milk bottle sterilizer are available in most 5 stars hotels. Ring/send an e-mail to the hotel and ask to reserve one for your BB during your stay.
Remember to get some spare medicine from doctor before you go. Other things just BB's personal belongings use every day. Nothing much special. You may bring some instant BB food to replace BB's daily meals for solid food. Most Asian hotels provide plain congee in daily breakfast. You may feed BB congee as breakfast in the morning.
we are now with our babies in the US. depending on where you are going to, you may want to have extra diapers + food (good for 2 or 3 days maybe).In case there is delay in flight or loss of luggage, you may not be able to buy though stuff. lots to bring!