Is it advisable to apply for a new passport and transfer a volunteer visa for my girlfriend in Thailand?

She need to renew her passport or get new passport first, then after that bring the paper in immigration if she will extend her visa Sir, She can use first the old passport then after that if you get already her new passport, can go to immigration CW to transfer the visa stamp into new passport, renewing passport it takes more than one month to get the new one. FYI renewing passport of Ph is before 6months expired sir.