Negative bro. I don't see how this would be helpful. You've got a lot of help in the Gabapentin (Neurontin) and Lorazepam (Ativan). My advice is to make your withdrawal a concerted effort. Don't make half-assed attempts at the process. I've seen a lot of people in similar situations to your own. They are needing/wanting to withdraw from Opioids and want to use these medications to do so.
What can happen, is the person does not fully commit to the process. They use Gabapentin and Benzodiazepines, relapse, try again in a cycle. This is a problem because both of these medications are limited in how long they can be used effectively. For a person in severe Opioid withdrawal, the amount of Gabapentin required to keep them straight often means they are pretty much saturated by day 7. Benzodiazepines, if you have not had a prior dependence, should only be used for 14 days at most. Using them for longer leads to a higher likeklihood of addiction/depdendence.
You don't want to end up in the same exact position with the only difference being you are now dependent upon Opioids, Benzodiazepines and Gabapentinoids. Seriously, I've known many people who have gotten stuck in this rut. These are some of the best tools we have to get a person through withdrawal. If you're going to use them, commit to a plan.