My neuro said the same thing to me last month. He said by all accounts I'm doing well. He doesn't feel that an MRI is needed at this time. If we were to do one right now and it showed more activity, we wouldn't change the current plan. If I wasn't doing well and the MRI also showed activity, then we would address the issue.
I don't have a problem with that. If he says I'm doing great and "see ya in 6 months". I'm not going to argue with the man
If I wasn't doing well, my visits to him would be much more frequent.