Crying

How old is baby? Sleeping less could be related to growing older so technically, baby will need less sleep. Crying after eating - gotta assess if it’s cos of tummy issues. Sometimes babies get reflux or other gastrointestinal issues. I suggest going to a paediatrician and check it out to get a peace of mind.

Probably due to gas in stomach. You have to burp your baby or keep him in upright position for at least 20/30 mins. My LO cried every night due to gassy stomach.

Could be colic or reflux or both at this age(3 weeks). Seek advises and the right diagnosis from your PD.

Could be just a phase but maybe you can bring your baby to the pd for a better diagnosis.

Did you burp your baby after the feed? Might be the reflux making baby uncomfortable.

Try to give another burp. Probably feels a little gassy. If persists consult a doc

Hi... maybe your baby is unwell. Better to bring LO to see a doctor

Sounds normal. If it persists, take her/him to the doctor.

Is it tummy wind? try apply some ointment.

How old is baby? Is it teething?