Can I remove the Braces in 5 months for minor corrections. Also does lower lip becomes loose after dental braces treatment?

Hi,im wearing braces since 5 months n the doctor wants to remove them now .im worried even though mine was a simple case as i dnt hav any crooked teeth but my front 2 teeth in upper row r a little forward.During these 5 months he created a space only in upper row n aligned into u shaped arch (both upper n lower.No gaps created in lower).spaces have been covered ok to wear retainers for next 7 to 8 months as suggested but is it fine to remove braces in 5 months.y is my lower lip looser nw?

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