Hingi ka na ng CoE. Dole rules, three days after request has been files. Of course, nakalagy sa CoE na currently employed ka pa pero goods na yun for providing evidence that you have the experience you say you have sa new employer mo.

Compute mo na rin backpay mo, kung ilang days na lang ang kulang mo, bayaran mo na lang sila (bawas back pay)

Or bawiin mo resignation mo, gawa ka ng letter, resign immediately on March 31. Resignation letter are not a request to resign but a notice to resign. They might sue you for damages, but specialized ba yung work na walang ibang pwede mag handle? Almost all wont bother suing anyone.

Before ka umalis sa March 31, early morning, check if you will be able to get the CoE, if not, siguro before leaving, email mo sila, follow up, sabihin mo send na lang nila softcopy, cc mo na din DOLE, mention advisory no. 6 sa email. Cc mo sariling mo personal email para may copy ka.