Our gorgeous boy (Monty D Bunny!) has a twitchy ear, and I was just hoping for a little advice.

He has been to the v-e-t, re. this and a facial paralysis that occurred almost a year ago. Vet prescribed a 28-day course of Lapizole. Towards the end of the course, the twitch started to fade, until it had almost stopped. Shortly after, we had to rush back to the vet with gas and belly trouble, which was solved quickly, thankfully. But, after returning from the bet, the ear twitch was immediately back. We presumed stress, but it is, maybe, a fortnight later and the twitch has not gone. Our vets are not particularly rabbit-savvy, and the closes surgery is over 30 minutes drive away (we live on a small island and this is all on offer), so I was hoping for advice on two questions:

1. Could e cuniculi present in a way entirely limited to a twitchy ear (and possibly the facial paralysis)? He has no other matching symptoms (touch wood)!
2. I now know that Lapizole is recommended in longer courses, but having had some recently, would it be safe for me to ask the vet for some more? As the ear twitching slowed with it before, am wondering if it did have some effect, but don’t want to request more if it could be dangerous with his recent treatment?

Thank you ever so much, guys!