Which procedure do you recommend for my lips? Upper lip lift or fat transfer? (photos)

Hello. I'm in my 20s and live in Toronto. I have had fillers before only 0.5ml (mini lip injection, conservative amount) and was satisfied until they faded away approx. 2.5 months after. The space between the tip of my nose and upper lip is 1.5cm. I was wondering what is the best option for a more lasting/permanent result? Upper lip lift, fat transfer etc? Fillers didn't last long.

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