You can take the lease and copy of Landlord’s ID to immigration and do it for him. They might fine him ฿1600 if he failed to complete the TM30 on time. IM will ask you for the money but the fine papers are in Landlord’s name. I did this and charged it back to the landlord on next rent day.
Apparently the volunteer rules have relaxed to allow 2 weeks volunteering renewable for a further two weeks. Cave rescuers used this relaxation to help out.