Dear
@AliA2k,
thank you for sharing your question with us here.
As for your question the 5 years start counting from the day you received your Aufenthaltstitel; so in your case you have to wait another year.
And you have to have been working in a tax payed job for 60 months in total in order to have success.
I hope I could answer your question, if you need further clearification please do not hesitate to address them here.
Best regards,
Nilab