1) I think you can have bursts of more frequent recurrences, and then it can settle down, you'll just have to wait and see. If something suppresses your immune system temporarily, you could have more frequent outbreaks and then, when that changes, get fewer.
2) Long term stress (greater than 2 weeks) can be a factor, though a very small one, statistically.
3) Usually eye herpes doesn't have one symptom, then progress to more severe symptoms, no.