hi - i have a 16 months old who still wakes at night - but i have been given lots of advice, and i will tell you what works for me (sometimes lol)
1. get a blackout blind, or hang a black fleece in the window so its nice and dark in the babies room.
2. whenyou feed or change her dont turn on the light, change her with just a very dim nightlight - if she has not pooed dont change her, use pampers or other good quality diaper during the night, they can hold a zillion wee's, she can easily go all night without being changed as long as its not poo - i used to check by sticking my finger in and feeling ( a bit yucky, but better than undressing and taking the diaper off for no reason and waking baby).
3. put her to bed no later than 8, start this now so she has a routine, even if she wakes up again at midinght for a feed (which she probably will).
4. get a wipes warmer - i second that, those wipes are cold!
5. keep the room at around 74 degrees, my babies hated and loathed sleepsacks, they much prefered a nice fleece footed pajama and a blanket if needed - when they were very little being swaddled in a light blanket really helped.
some babies are just good sleepers - neither of mine have been, my son didnt sleep through till he was 5!!, shouldnt really be giving advice lol - but this is advice people have given me over the years, hopefully it will work for you