just guessing the system is low on freon, needs charging / checked for
leaks.

you ask what to do, go to a reputable ac repair shop, ask for a
diagnosis and zip the lip. They'll tell you what is needed / cost.

a c systems are too expensive to screw with for most do it your self
mechanics.

an a c unit is designed to where the compressor will cut-out on a
low-pressure condition.

m h o
*v ƒe