Don't worry, gifts don't go away. If your precognition hasn't manifested (I'm assuming it just happens from time to time), then maybe you just don't need it right now. My Mom also has some natural precognition and visions can be months apart. If you really want to there are some ways (I don't know any besides meditation) to trigger a vision at will. There is no need to panic, our talents don't disappear, at worst we just get out of practice.
What he says is true. Im dream sycic and I can sence ghosts I havent done any of those things for a long time but lately theyve been happening. in fact i senced a ghost while I was typing this. No joke.