How long can it take for libido to return after stopping taking hormonal contraception?

Good afternoon, the gynecologist prescribed Diana-35 due to excessive hair, while taking the pills I felt a decrease in libido, after taking 4 months of pills, I visited the doctor, which I told about, after which he stopped taking the pills for a month to analyze the hormone. Question: what is the approximate recovery time of libido can be, since I was told that most likely it is due to a decrease in testosterone ?