Do you mean 1 x 100mg gabapentin cap 3 times a day? Honestly, 100mg gabapentin probably won't do much. I'm a veterinary technician and we prescribe 100mg capsules to cats and small dogs

Perhaps start with 300mg gabapentin in one dose if/when you need it, and see how you go with that. I echo what Squeaky said about using it for sleep, it works really well for sleep
Always keep in mind that you will build a tolerance to gabapentin VERY quickly so try not to increase your doses too much otherwise you will have to tackle gabapentin WDs when you stop taking it.