you mean come with tr60 and want extension more30days? You can extension You can extend your visa while you are in Thailand for 15 days through a broker, agent, or agency. You can extend your visa yourself. The Immigration Bureau will extend your visa for you when you have only 7 days left on your visa.
Yes but The best way is to apply for a new passport before the visa expires. You can do it 6 months maximum before then. You can transfer the passport after that. You can extend the visa normally for 1 year. If you do not apply for a new passport, you will get a visa according to the passport validity, which is 8 months from September to May.so you lost 4month 🙏