This may already be a thing, but I haven't heard of it in the professional cuddling community. It's common in certain therapeutic professions, and sometimes compulsory.
The basic idea is that a group of professional peers - in this case, cuddlers - meet on a regular basis to discuss anything they like relevant to their work. Most commonly this is difficult situations or emotions connected to their clients or colleagues. Emotional support can then be provided, possible solutions discussed, and in the long term everybody learns better ways to manage professional challenges and therefore reduce stress.
The origin of the word "supervision" in this context comes from the idea of a "supervisor", meaning a mentor or tutor. Many people have a supervisor while under training or as a junior, but once they become an established member of their profession they no longer have a supervisor. Instead, they are supervised (i.e. advised, counselled and supported) by the group.
Such groups are formally leaderless and unorganised (so as to avoid any power inbalances) but of course somebody has to initiate the arrangments. Meetings may be weekly, fortnightly or monthly, depending on the group. In the context of cuddling, it seems that two models are possible - online, or local, although there are only a handful of places where there are enough professional cuddlers close enough together to make this a realistic possibility.
It is important to note that professional cuddlers are not in competition with each other in any meaningful way. This is a big enough topic for its own post. Having said that, peer supervision groups should be careful not to break any laws, for example on price-fixing. (For example, if all the cuddlers in an area agree to charge the same price, that would be illegal in most jurisdictions.)
It's also important to remember that one of the key objectives for the cuddling community as a whole is to expand the market. There are literally millions of people out there who need a cuddle, or at least a big hug.
I would love to see more professional cuddlers working together to support each other and therefore their clients.
A few random links I've just found to help you get started:
http://www.peer-supervision.com/
https://www.coachingmentoring.co.nz/articles/peer-supervision-no-one-knows-much-all-us
https://www.hcpc-uk.org/globalassets/resources/reports/research/effective-clinical-and-peer-supervision-report.pdf