If you filed in August 2023, it only been 5-6 months. It's perfectly normal wait time. Whenever I read N-400 is the fastest and easiest step, I scratch my head. It is the most serious part of immigration journey, with USCIS granting the ultimate immigration benefit that's very hard to revoke. No wonder they take time. They have go go through entire immigration file to see if everything was done correctly at visa, AOS (if applicable) and I-751 stage (if applicable). As one lawyer says, it's their last chance to deport somebody. No that they would deport anybody who's case taking longer. They just examine everything very closely. Plus the usual backlogs.