Singapore Airlines were brilliant when we first flew with dd ( 8 months at the time) We are returning to Aus with them in June. The cabin crew are brilliant with children and they seem to anticipate every need.
I offered dd a bottle with water at take off and landing. We had two night flights with a very brief stopover in Singapore - it suited us to get the travelling over in one go. We prebooked the sky cot and that was brilliant. We put dd in her pjs and sleeping bag and she slept all the way to Singapore - woke briefly whilst on the ground and then slept all the way through to Brisbane.
This time she will be almost 2 - so it will be different - she has her own seat but also a skycot as she is so little. We are taking her car seat for her to sit in on the plane (only cause we are emigrating and so need to take it anyway.)
As she was bottle fed - I took premixed cartons of formula and steribottles - one use and then throw so I could jettison stuff on the way. Once on board - the crew gave us nappies, little bags for disposal and wipes. I had not ordered a meal as I took what dd liked to eat best - they still gave us one.
This time I will take little snacks for her, her favourite books and some little toys to keep her occupied. Although it is an afternoon departure - it turns into a night flight - if that makes sense.
When we flew there seemed to be a number of toddlers/babies flying on the same flights and others I have spoken to cannot recommend Singapore airlines enough. The airport in SIngapore is brilliant - lots to keep children amused with a transit hotel - book rooms for short stay along with fitness facility, soft play area, children's play area and swimming pool.
I know there are a few threads on this if you do a search.