Hi all. DD is 13 months old and hasn’t woken in the night for a feed since she was was 6/7 months old. She goes to bed at 7pm no problem and will sleep until 6:30/7am. Normally... 
However, the past couple of nights she has woken up screaming at 4am and only a bottle has settled her. Thankfully this morning she went back to sleep after her bottle, but the night before she didn’t and refused to go back to sleep (screamed whenever I put her down) so we were up for the day at 4:30am! 
She has got two teeth coming through currently and with the warmer weather perhaps she’s waking up thirsty? I don’t know, but I don’t want to keep giving her a bottle in case she makes a habit of it and starts waking every night!
Any ideas why she’s doing this and what I can do to stop it?
Thanks 