The phrase "assisted once more" is correct and usable in written English.
It can be used when referring to someone receiving help or support again after having been assisted previously.
Example: "After struggling with the project for weeks, she was assisted once more by her mentor, who provided valuable insights."
Alternatives: "helped again" or "supported once again".
Cameron, assisted once more by several newspapers and their inadvertent echo in parts of the BBC, plans to do the same with Ed Miliband.
Ighalo completed his hat-trick with a simple finish, latching on to a loose ball after Deeney again hit the woodwork, and the Nigerian was assisted once more by his strike partner for his fourth of the afternoon.
He was also concerned by further claims from Remi Korchemny, Chambers's notorious former coach, that he was once more assisting the British athlete.
In the following match, he started once more, and assisted two of the club's goals in a 3 1 win against Salisbury City.
After reloading, the carriage was manhandled down the sliding platform, assisted by gravity, until the gun was once more in firing position, or "in battery".
He was contacted once more, in 1981, and "materially assisted" the F.B.I. on another national security case that involved an undercover operation.
He also added another assist on Sunday as Santos came from behind once more to beat old rivals Corinthians.
He told the resident assisting him to fill Christina's heart and try once more to make it start beating again.
This confirms once more the reliability of this technique in assisting tumor resection.
Now playing further forward on the right wing, the Portugal international is excelling once more, with one goal, two assists and 3.6 tackles per game enough to secure the highest rating in Ligue 1 (7.89).
Once more he rallied, and he was able to assist at Christmas Midnight Mass in his bedroom.
