PCT has entered various national stages. Can inventors change it?

What are the formal requirements for PCT to apply for entry into the United States? Time limit for entering the national phase: PCT 22(3): 30 months from the priority date PCT 39( 1)(a): 30 months from the priority date? How to enter the national stage: direct continuous application or partial continuous application (CA or CIP)? Language: English? Special requirements: the inventor declares that the applicant enjoys priority. If an information disclosure statement (IDS) is applicable, an electronic sequence list shall be submitted. The US patent application fee is $330, the retrieval fee is $4 10, the examination fee is $2 10, the exclusive right surcharge is $220/claim surcharge is $52/specification surcharge is $390 (exceeding 100 pages), the authorization fee is $270 /50 pages, and the publication fee is/kloc-. Annual fee is 300 USD 4 1 10RCE (request for continuous review) 865438 USD+notice of appeal) 540 USD appeal summary. $540 Notice of Oral Hearing USD 1080 The general fee for application is $7,500, and the fee for small enterprises is roughly halved (165). The agency fee for the application stage is $65,438 +0000- 1500, and the agency fee for replying to OA is roughly 1500-2000.