I am not familiar with infected scent glands, however, I advise seeking a rabbit vet to see if oral antibiotics are needed. While an infection can look solely surface-level, if there’s part of the infection below, no topical treatment will be able to combat it, meaning the infection will keep coming back.
Also, although it may look like infected scent glands to you, it’s always good to get a professional opinion to ensure you and your rabbit are using time and resources effectively. I’m sure it will help ease frustrations as well, whether it’s confirming what you suspect and getting a more effective treatment, or offering an alternative explanation and getting the correct treatment.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.