You don't need to add any more pressure than gravity when bleeding air from the clutch system on Stilo. By pushing on the clutch pedal you just ADD to gravity, nothing magical there. Self bleeding kits do exactly the same, just add to gravity and save you having to retop the fluid
The Stilo clutch system is 1ft long and straight down so you don't need to add any pressure to it or you'll just end up the loads of fluid everywhere. Got a vertical tube full of fluid? Open the bottom and what happens? Fluid pours out. That's all you need for the 1.6 Stilo clutch system.
Different for bleeding a whole brake system as air gets trapped in pockets but for just bleeding the small amount of air trapped in the slave cylinder then just follow the guide.
Once only fluid coming out then there's no more air and you've bled the clutch
Is the slave cylinder working properly i.e. is the slave cylinder piston moving properly when the clutch is depressed?