hi: since past 2 days my 3.5 month old daughter has been sleeping off without her usual night feed. she has a set routine of last feed at 930pm then wakes up at 230am then 530-6am. yest she was cranky through the day and was crying a lot. she slept at 930 without drinking milk...but followed the 230 n 6am feed. today again she had only 2 oz at 8pm and post potty at 830 slept at 9pm. is there anything to worry? is my baby intake reducing?