Yes, just get your TM.30 updated through your hotel and landlord and visit your immigration. Most immigrations accept extension 30 days prior to expiration date, Jomtien and Samui within the last week.
Foreign lady married to Thai man is excused for any financial requirements. A foreign man has to prove 400K baht for the first year and can switch to the income method for the second if he earns min 40K baht a month inside Thailand. If your embassy offers to give you a affidavit letter regarding income some immigrations also accept monthly income/pensjon from abroad.
You can apply for a 30 days extension on your last entry and 60 days visa exemption.
Bring a receipt of your updated TM.30, copies of ID-page and last stamp in your passport, a pass photo and 1900 baht in cash. You apply on a TM.7 form at the immigration.
If you’re worried about your TM.30 address registration and your border bounce, just get it updated before you apply.
A male without income married to a Thai female need to prove 400K baht in his name to apply for a Non O visa based on marriage and 400K baht two months prior to the extension of stay.
The benefits is that you will have possibility to enter Thailand and get stamped in for 60 days each time within a 180 days periode and you’re (theoretically) able to stay for up to 270 days in Thailand. 60 days visa exemption entries has become more strict and after you’ve maximised one or two you risk to get questioned and/or denied entry.
Ok, you take one of the escalators up, pass through security, take one escalator down again to the immigration for Exit. There you will see a RE-Entry sign in the right corner opposite the immigration desks. Easy to see, open 24 hours , no queue when I passed only an IO waiting. No worries.
Feedbacks from members that it was closed from the end of January and when I passed through a week ago the whole office already was removed and walls taken down. I also asked a security guard who told me that it now was removed to after security in front of the immigration. All I know.