13th month pay + 30 day render period

Problem/Goal: Hello ask lang if ok lang ba na mag-resign ako a week before receiving my pro-rated 13th month pay?

Napapaisip lang, since ang 13th month pay ay sakop hanggang december 31 diba? and upon checking, since magrerender ako ng 30 days, sakop pa rin sa payroll yung rendering period ko until december 31. Medyo takot lang magpasa ng resignation letter since baka singilin pa ko

Nov. 24- will pass my resignation letter Nov. 25- payroll + 13th month pay Dec. 24- last day

Please be kind sa comments since I just wanted to make sure kung tama ba yung steps na gagawin ko. Thank you