If you keep adding fluid it has to gosomewhere. Two places to look. In the cab on the firewall at the clutch peddle is where the master cylinder will show leaking. Under the Jeep at the inspection plate between engine and trans is where you will find the slave cylinder leak.
It is a closed system so it has to go somewhere. If it leaks it is getting air back in no matter how small. So look closely and decide which parts bad and then replace it.
You may depending on funds want to replace both at the same time with a completely assembled and bled assy.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
AF Jeep Club Tail #184