Tretinoin, metrogel, hydroquinone in what order? Have mild rosacea, sun spots, mild melasma and wrinkles

Diagnosed Issues: mild rosacea, sun spots, mild melasma, wrinkles Dermatologist "put on when you can" and when I asked her when or in what order her response was to ask my pharmacist. I replied that I am a pharmacist but I am unsure when to apply for optimal results. She responded that I can Google it. She's nice but I'm seeking another dermatologist haha In what order or what times do I put on the following products: Tretinoin cream Metrogel Hydroquinone Moisturizer Vitamin C or E serum