Rocky goes through episodes about 2 times a week,
when he will skip his breakfast. He
tends to get gas a lot, but not like you
are describing about Chester.
When Rocky and Sheba get to much gas I give them,
Gas-Aid by Francodex.

Keep an eye on Chester to make sure his
tummy doesn't look swollen from air.
I will be thinking of Chester and hope
he is ok.