Diplopia is starting again at certain point distance of 30 m. it was resolved before a week. is it a symptom of rrms. doc told it will also resolve.

Could be: Diplopia is a common presenting symptom of ms and can occur during relapses. It typically resolves over time. Prism glasses can correct it temporarily if it is bothersome.

Doubtful: Yes, MS pts can experience double vision, but other issues co-exist, as it is a disease of "multiple" symptoms. You have a specific visual problem which needs to be assessed by an eye specialist. This is rather unlikely to be MS, yet needs to be diagnosed and treated.