Hi mummy, im a FTM, my baby also 3 months alrdy. I always scare baby not enough so i will feed until he full, he will use his tongue to push the bottle teat away. I gave 100ml, 2scoop of aptamil for the past few weeks, started giving him 120ml, because i find that he start to get hungry faster... But, i encounter before, he throw up alot of milk , i suspect is because i fed him too much. So sometimes its very hard for me too, so i aga aga 2.5 or 3 hrs interval feed him.. i did not let him sleep through the night, cos he sleep late, i also woke up late, i feed him multiple times at night. Plus day time he also no sleep much, im worried he not enough sleep too. I asked my polyclinic doctors all say my baby is okay(weight n height is normal). You should bring up this issue with the doctor, they can advise u the correct thing , jiayou mummy!
jessica