Baby Sheri's new sleeping habit

Coaxing baby Sheri to sleep is always a constant battle for mummy. For some unknown reason, baby Sheri is always more alert at night despite the fact that mummy tries to tire her out by playing with her in the afternoon. She is only willing to go to bed after twelve midnight. There is one thing which I do not know if it is only perculiar to baby Sheri. She needs to suck on a bottle to fall asleep. So, what mummy needs to do every night is to carry her in and out of the bedroom, giving her a bottle of milk each time she fusses. However, if she manages to fall asleep, she can sleep throughout the night without waking up. So, finally, mummy can have a good night sleep without any disruptions. Perhaps, it is due to some motherly instinct, I don't seem to be able to sleep for a long time unlike in the past . Usually, I will wake up at about 6 am to change baby Sheri's diaper and feed her since she must be feeling quite hungry after sleeping for the whole night. She will usually sleep througout the whole morning, waking up every 3 hours for feeding. I will try to freshen her up at noon and that marks the start of the day for baby Sheri.