Do I need a new TM30 for a visa change and what are the requirements for a SETV extension in Thailand?

Hello. I have a few questions:

1) My landlord did a TM30 for us when we arrived. I will be stamped for my Non-B on May 17th. It has already been approved by Chaeng Wattana, however they don't stamp same day anymore apparently. Does a new TM30 need to be completed for me at any point after my visa changes?

2) My husband will be doing an extension on his SETV while we wait for my work permit, so we can switch his visa. Does a new TM30 need to be done for him?

3) When we do the extension for my husband, does it need to be done with a certain amount of days left on the tourist visa or can it be done up until the last day? Does he need to take proof of funds or onward travel with him to Chaeng Wattana for an extension?

Thank you! 🙏