After 5 years, I'd drop down to 0.75mg for a while, not down to 0.5mg. I've not been on lorazepam steadily for more than a year at a time, but it's such a powerful Rx that I'd be very leery of dropping by 50%, esp. after 5 years.

What does your doctor recommend? ****It's really important to have their input when tapering off a controlled substance.****

Also, what are your dr.'s thoughts on OTC helpers such as Calms Forte or ashwagandha? (I'm not urging you to try either of those -- just noting that both have been helpful for me on the nights that I don't take lorazepam. You and I might take lorz. for different reasons; I take it bc I have difficulty falling asleep and staying asleep.)

Wishing you well with this -- and pls do talk to your dr.

If you want to go down to .5, do a slow taper to get there. Based on how I tapered off of .5 (took me about six months,) I’d recommend the following based on how my sleep medicine doctor told me to wean off it:
Do every two to three weeks:
1) 1mg, 1, .75, 1, 1, .75….
2) 1, .75, 1, .75, 1, .75…
3) 1, .75, .75, 1, .75, .75…
4) .75 every day
5) .75, .75, .5….
6) .75, .5….
7) .75, .5, .5…
8) .5 every day
Please note: I’m not a doctor but this is similar to the slow taper that worked for me.
For what it’s worth!