What are the best Muay Thai gyms in Bangkok for DTV applications, and are 1-month memberships still likely to be approved?

I am exchanging emails with Eye Tiger, who are fantastic, and they are saying there is a lot of scaremongering happening online and people are being approved with 1-mnth packages through their gym. If they were trying to push larger packages (to make more money), I'd be suspicious, so the fact that they say shorter memberships are being approved tells me they're a respectable good-natured gym. They're saying that if an embassy requires a minimum course length they will explicitly let you know and a Western embassy would allow me to upgrade to a bigger package if necessary... but I cannot find anywhere on the official London Thai Embassy website, or anywhere online, specifically outlining what course length they want 😩 I may not stay in the same area and may end up joining different gyms, or whatever happens... so not keen on buying a 6-mnth package, but there is mixed info it seems. Lots of DTVers (including Eye Tiger gym themselves) are saying 1-mnth is fine, and then other people are saying you'll get rejected. Either way, I am grateful for everyones ongoing help & comments and will do my best to make an informed decision based on what everyone says 🙏 I won't get 1 month, I will get at least 3mnths 🙏

Constructive help is welcome, sharpness will not be necessary - I take on board everything everyone advises, as long as it's done politely... we're all learning, and we've all been newbies at some stage in our life and it's clear the requirements can vary even within the same country, otherwise this group wouldn't get so many questions 😅