"Michael is still in the wake-up phase" - these are the words from Michael Schumacher's agent, Sabine Kehm, referring to inquiries about the Formula One legend's condition, adding that "this phase can be long."

The seven-time world champion remains in a comatose more than two months after suffering a brain injury following a skiing accident along French Alps. The 45-year old German remains in Grenoble Hospital in France where he is in an induced coma.

Schumacher remains unconscious but if he ever wakes up, according to medical experts, he might not find his top form gain.

"It does not bode well," said Dr. Tipu Aziz, professor of neurosurgery at Oxford University.

"The fact that he hasn't woken up implies that the injury has been extremely severe and that a full recovery is improbable."

Aziz,  who is not part of the team that oversees Michael Schumacher's condition, says that each day, doctors always make an effort to wake up someone who is in coma. However, in Schumacher's case, it is taking too long, which they said is a bad sign.

"If you don't start getting any positive signs, that becomes very worrisome," he said.

On February 20, doctors at Grenoble said that they were already taking steps to reduce the amount of drugs used to keep their patient unconscious, hoping to see small gestures, like movements in the eye.

Dr Luca Regli, who works as head of neurosurgery at the University Hospital of Zurich in Switzerland, said that this process takes two to three weeks.

"In an ideal case the patient attains a minimal awareness and then completely recovers. If this second step is unsuccessful we speak of a waking coma in which the patient opens his eyes but is unaware of his environment" he said.

Weeks passed, Schumacher didn't respond.

Other medical expert echoed Aziz's conclusion saying the racing icon might not fully recover from this tragedy.

"About 90 percent of the recovery is made within nine to 12 months, so this is still early days," said Dr. Anthony Strong, an emeritus chair in neurosurgery at King's College London.

"The longer someone is in a coma, the worse their recovery tends to be."