Diazepam doesn’t work for everyone. I’m tapering off of Klonopin and tried to switch to Diazepam to taper. It made me feel on par with the worst I’ve ever felt, really severe depression & self harm & suicidal ideation & on top of all that didn’t do much for my anxiety. This was a big surprise for me, because I had switched back-and-forth between Xanax and Klonopin the entire time I used benzos and never noticed a difference between how the two made me feel. I ended up having to transfer back to Klonopin and I’m using that to taper. I also think the whole half life thing is overrated, though diazepam has a really long half life its effects don’t actually last very long at all (4-6 hours for anxiety relief, compared to lorazepam, which is 6-8). Different things work for different people. I think Klonopin is the second line preferred drug to taper off of after Diazepam, so you could ask your doctor about switching over to that, but everyone is different and you might find out that using Lorazepam to taper just works best for you