What is forgetting an experience?
Nirvana isn't an experience, or a state. Nirvana is just stopping. Can you see, directly, now, that everything stops? That everything is always stopping?

When you do see that directly, that is, when your mindstream turns for one moment towards the stopping that's always happening, and you get a glimpse of Nirvana, "you" won't be there. But there will be an aftershock in your body. 

That aftershock may be pleasant, and feel like wisdom- it may even feel like being a "supreme seer". But it's an experience in your body, in time, and is not itself "being in Nirvana".

Nirvana is in you because your mindstream, your experience, is always stopping. It's always going over the edge of a waterfall.

All of that might not make much sense :)