We can do that until our visa expires if we haven't changed addresses. Informed by Immigration when TM 30's became the vogue as I was filling out a new one at the Promenade office second floor. That's what I now do.
I live at home with my family ( Thai wife ) have a non immigrant 0 based on marriage and do not miss going to the CM Promenade Immigration Office when ever I return to the Kingdom as required by the Thai authorities. We can bring the same TM 30 if we haven't changed addresses. No need to fill out a new one if you meet that criteria. They require a new one only when your visa expires. If you are a little later then 24hrs there shouldn't be a problem. I wouldn't push it more then a week and I myself go within 48 hrs to be done with it.
As an aside if you do not have a pension then a letter of income from your financial institution or brokerage house is also acceptable since one only needs proof of income not proof of a pension. The US embassy letter is only a guarantee of signature by the embassy. Shh ! Some can get by on 30k baht in Chiang Mai
It is a problem if one has not taken the proper steps in advance. Thailand commercial law recognizes a Usufruct for thirty years or ones lifetime to be attached to the title of the property deed. It's easy to do with an attorney and inexpensive. Of course it has to be done before the landowner,such as a spouse,dies.