Welcome to the forum Julia. Sorry for late reply.. anyway, how about your general health? do you frequently suffer from constipation? any menstrual irregularities? Sleeping habits..? stress..?
If this treatment method is not working for you, why don't you add BPO (Benzoyl Peroxide) to this regimen. Applying products containing BPO on alternate days on your forehead might work. As the type of skin differs per individuals, so every treatment that works on other may not works on you. Finding the better product that works might take time. Just try to avoid any triggering factors like stress, diet(if u think it aggravates), avoid constipation and so.so. Also to avoid antibiotics resistance and better result, combination therapy with clindamycin, BPO and adapalene is suggested.