That depends on the reason you need it? You're afraid you damaged your gaba receptors right, how come? Benzodiazepines stop working for everybody within a couple of weeks or months.
What I do know is when we use certain medications who force control over certain area's in the brain like receptors, those receptors can indeed get damaged, but most likely they get lazy before they get damaged, our brain luckily is very flexible and can heal, reactivate and build new synapses which takes time. And yes there are things that can speed up this process, for example the Mushroom Lion's mane, it doesn't give psychoactive effects but it's a powerful full with agonistic traits on certain adrenaline and dopamine receptors. Let me give you an example If a person took benzodiazepines for a long time it can effect certain receptors like norepinephrine (noradrebaline) and makes it lazy because the benzodiapines didn't provide much of a reason to do it's job, so when a person quits the benzodiapine this receptor need to learn how to work again resulting in over activity, over activity of norepinephrine which results I an increase of cortisol (stress hormone) which can lead to depression etc. When something in the brain is effected by a substance it starts to effect many other mechanisms that are not gabanergic for example, time is an very important factor that the brain needs to balance itself out when sudden changes happen and it's not always necessary to counter it with another substance.
Lions mane, can be bought as growkit and is a good tasting mushroom with lot's of proven benefits that accelerate the process you are looking for. Here is a link, about its effects on depression but this is just one of the many traits it can benefit. Stay away from the powdered capsules they are very inefficient compared to the fresh lion's mane mushroom.
Depression is a common and severe neuropsychiatric disorder that is one of the leading causes of global disease burden. Although various anti-depressants are currently available, their efficacies are barely adequate and many have side effects. Hericium ...
www.ncbi.nlm.nih.gov