German and French media reported the royal, 45, only meets with Prince Albert for ceremonial reasons.
Princess Charlene spent the summer on a yacht trip with her husband, 65, and their eight-year-old twins Jacques and Gabriella.
But rumours about the couple’s marriage have been fuelled by speculations after the Monaco royal did not return to the Palace and is living abroad.
An insider told French paper Voici that the former Olympic swimmer and son of Grace Kelly are just a “ceremonial couple”.
“Albert and Charlène are now good partners, take turns taking care of the children,” they also told German newspaper Bild.
The source, who claims to be close to the royal couple, added that Charlene has promised to return to Monaco on official occasions and is now allowed to see her children more often.
It comes after the princess was spotted in Milan without her engagement ring after denying divorce rumours.
Charlene also spent 10 months away from her husband after returning to her native South Africa for what was supposed to be a month-long trip.
She wasn’t pictured in Monaco from January 2021 until March 2022, citing an ear issue which stopped her from flying.
Upon her return to the principality, she was reportedly feeling “overwhelmed” and “unwell”.
Prince Albert told People magazine that the family reunion in Monaco last week initially went “pretty well” in the first few hours, but it then became “pretty evident that Charlene was unwell.”
He said the former Olympian “realised she needed help”.
“She was overwhelmed and couldn’t face official duties, life in general or even family life,” the Prince added.
Charlene’s breathtaking Monaco palace, that features a stunning marble staircase, was deserted for 20 years.
She has had a life of luxury in the iconic landmark for seven years.
Outside, the royal courtyard is paved with three million white and coloured pebbles, laid in mesmerising geometrical patterns.
On the ornately decorated walls lay 16th-century Genovese frescoe mythological paintings.
A Leonardo Da Vinci-designed marble staircase sits between equally impressive Carrara marble columns.
This royal family also enjoy splashing in their huge aqua swimming pool, shaded with palm trees and located in pristine, green grounds.