The phrase "aware earlier" is correct and usable in written English.
It can be used to indicate that someone had knowledge or awareness of something before a certain point in time.
Example: "I wish I had been aware earlier of the changes in the schedule so I could have planned accordingly."
Alternatives: "informed sooner" or "cognizant beforehand".
Mr. Noah seemed aware earlier on Tuesday of the controversy surrounding his tweets.
Schaefer said he was disappointed he had not been made aware earlier of key information regarding Peterson's drugs test, leaving little time for an alternative opponent to be found.
In a statement, the HSE said: "The public health department was made aware earlier (on Thursday) of the remains of an individual, discovered early this morning, who had recently travelled to one of the areas in Africa affected by the current Ebola virus disease outbreak.
Because of his parents, though, Kentridge was aware early on that he lived in an abnormal society, where terrible things were done every day.
My brother and I had been made keenly aware, early in our childhood, that the Gateses had a certain status in Cumberland.
In a way that few others do, I became aware early on that nurses deal with death on a daily basis.
He has said that he always loved organizing games of playacting with friends — his specialty to this day — and that he was aware early on of being gay, but that news of the AIDS epidemic made him shy of sex.
The Germans were not aware, early on the 18th, that the French lay on their right flank as they deployed parallel to the road from Mars-la-Tour to Metz, facing north.
The former chief of the Federal Emergency Management Agency, Michael Brown, said the White House and the department of homeland security, which oversees Fema, had been made aware early on that a breach in the levees had left 80% of the city under water.
A confidential Justice Department report found the company was aware early on that OxyContin was being crushed and snorted for its powerful narcotic, but continued to promote it as less addictive.
But the very existence of this footage proves that Rouch and Morin were aware, early on, of what would crystallize, implicitly but unambiguously, as the film's key idea: the basic question of a person's happiness, with which the film started, turned out to be intimately linked to politics and in fact to the ability to speak out clearly.
