We gave our son warm water with brown sugar. Like your baby, not alot worked for us either and we had to tough it out.
What can I give him to help with that ? Gripe water isn't really working
Same with my son, he finally grew out of it when he was 6 months!
He mite have wind. My daughter did the same thing and it only got better as she got older
He may be suffering from colic? Its when the baby can't pass gas or wind. My little one had it and it was horrible!