I have a Multiple entry Non-Immigrant O visa that runs out on 6th Sept 2024 I am currently not in Thailand Im in Ireland - Can I renew this visa in the embassy in London where it was issued as I will be travelling to Thailand in mid November for at least four months or do I just apply for a new one after this one runs out

Thanks Kevin

Possibly a dumb question.

I have a multiple entry non-immigrant O visa, valid until September. I am currently here on a 90-day stay, which will expire at the end of this month.

Can I apply for a 60-day extension of stay based on visiting family, taking me to roughly April 30, then do a border bounce and get another 90 days? Or will the extension of stay void the visa?

Thanks