Ask for my boyfriend

1) Moroccan nationality

2) got 1 SETV from his country before flying here in Dec 2019

3) His visa + 30 days extension will be expired on 27 of March.

4) He still needs to be here a bit longer to experience Songkran.

5) How and where can he apply for METV with high % of chance to succeed.

6) What he specifically needs to show (I mean budget or docs) to be considered on his visa.

7) Thank you in advance 🙏🙏🙏