you can try to massage the tummy.
100% it works
use belly button as the center.
each side with 2 fingers length and find the dot and press it lightly until you feel the baby's tummy pounce back. (remember, not too hard)
press it for 5 sec and release.
repeat it for 10 times.
one at a time for left and right sides.
then go for up and down.
same measurement of 2 fingers length.
keep doing it for 5 min.
after 30 min or hours(less than 5 hours)
Baby will release Bombs...sometime Poo Poo.