How can I know if I’m fluent in English ?

I’ve been learning English since kindergarten, i would listen to nursery rhymes. I‘ve been taking English at school since middle school, this got me to A2 level. In January 2024, i started learning English seriously, and on my own, immersing myself in the language for hours every single day. Now, two years and a half later, I am B2 according to the CEFR descriptions. I can text in English, watch videos, without subtitles if I master the subject. People have no problem understanding me, and I have no problem understanding them. I understand pretty well the American accent, and the RP British Accent, but I struggle with UK regional accents. I understand foreigners, if their accent is not too strong. I can take classes entirely in English. I can read books, and follow the story, I just get lost with descriptions, as it requires more advanced words. I can have conversations, I think directly in English, and I can express my thoughts even if it lacks details sometimes, and I feel like I can’t express myself as accurately as in French my native language. But still, I feel like English is no longer a foreign language, it‘s *my* language, part of myself.

So according to the abilities and skills I described, do you think I‘m fluent ? Can I finally say I‘m fluent in English ?