What do I need to know about reporting and renewing my Non-OA visa in Thailand?

Hi guys, I'm from Malaysia, above 50 and upon further consideration, I have decided to apply for the non-OA immigrant visa.

After downloading the visa application form online, I made sure I got all the relevant documents prepared. They are as follows:

1. Completed application form (downloaded from the embassy website);

2. Original passport plus copy of the photo page (my passport will only expire in 2026, so no issues there);

3. Documentary evidence I'm a permanent resident in my country. In my case, I showed them my house title (plus copy);

4. Certificate of good conduct applied and issued by my country's foreign ministry;

5. Bank statements certified by my home bank branch that I have at least 800,000 baht in my account;

6. Got my family doctor to examine me and certified I'm free from the 5 diseases stated in the form. ie. leprosy, tuberculosis, elephantiasis, 3rd stage syphilis and drug addiction;

7. I have a life and medical insurance policy in my home country which is more than the required 400,000 baht minimum. I got the insurance company to fill out the form which I downloaded online and got the manager to sign it; and

8. Passport sized photo with white background not less than 6 months old

I went online to book my appointment 2 weeks ago and I got scheduled yesterday at 11.30am. Arrived and submitted all my documents. The officer asked me why didn't I show proof of monthly income of 65000 baht? I told her I'm already retired, hence do not have this. I said the amount in the bank statements showed more than 800,000 baht which should be sufficient. She went to check with the consul and told me everything's fine. I can collect my passport with the visa the next day. She issued me a letter which I had to bring along when collecting the passport.

I felt very happy as the entire process took less than 45 minutes (including the waiting time) to complete.

When I got home, I received a call from the embassy requesting for additional information. She said the consul upon further review of my case decided that I need to show I have sufficient money to spend for my living expenses in Thailand.

I informed her I have a condo in Bangkok which is currently being rented out. She requested for me to furnish a copy of the title and the lease agreement via email. To be on the safe side, I also added an additional bank statement showing my fixed deposit too. Emailed the documents and didn't hear from them anymore.

I went to collect my passport today at 3.30pm. Took me less than 2 minutes since it was practically empty!

So now I have the 1 year non-OA visa in hand with multiple entry.

For the time being, I will be going in and out of Thailand on a monthly basis. ie. 3 weeks in Bangkok and 1 week in Kuala Lumpur.

My questions are as follows:

1. If I am not going to stay for more than 90 days, I guess I do not need to do the 90 day reporting, am I right?

2. Other than the TM30 form, what else do I have to do?

3. I'm also assuming that 1 month before the expiry of this visa, I'll go to the embassy again in Kuala Lumpur to apply for a new OA visa using the same requirements. Is this assumption correct? If so, there's no issue of renewal at all but a fresh application each time.

Thanks in advance for any sensible clarification.