I have to stand up to finish every drain 5 times a night meaning little if no sleep.
I know what it's like with the cycler beeping it's head off all night with low drain alarms, my first cath was like that.
You can adjust the minimum drain alarm, I think mines set to 85%. That means 85% of the fill volume has to drain before it will start the next fill.
Easy to accumulate fluid in there though with subsequent cycles. As long as the last drain is good, I have a minimum UF target set at 500ml,
If it doesn't reach that target, it stops at the end of the last drain and waits for me to wake up and restart the drain to get more fluid out before the final fill. Before I set the minimum UF target the machine would give me fluid some nights, not good!