I'm the Head of Comms for a big multinational, and do lots of mentoring for junior people coming into/recently entered the industry
Without knowing more about your current role, it's difficult to say for certain, but you should be able to apply for Account Coordinator/Junior Account Exec roles in agencies, and work your way up from there
There will probably be in-house roles which combine EA work with a bit of comms but there is rarely much opportunity for progression, and you don't get as much opportunity to muck in and learn new skills.
I would aim to try and do 5ish years in an agency. It should get you up to account manager, or junior account director if you really go for it.
Downsides: the pay is pretty rubbish early on. I'm pretty horrified that starting salaries are the same as when I got my first PR job in the early 2000s - £22-28k for a London agency
It's London centric. Yes jobs exist outside London, but they are rare. And 95% of the press are in London. So if your long term plan is to live outside of commuting distance, it won't be easy
Long hours at short notice, and being expected to be on email and phone outside office hours. If this is an issue for you or your family, this probably isn't the career for you. Reporters and clients don't think being on holiday/at your DC's birthday party/ill is a good enough reason if you don't return their call or answer their email
Upsides:
Once you've been doing it for a few years, the money is excellent. You can get to a six figure salary within 10 years if you are good, and work hard
It's transferable. Between industries and sectors, and between countries. If you want to live in another capital city, it's pretty easy to get a job in comms
It's fascinating, brilliant and eye opening work
If you pick the right clients, you get LOADS of free stuff! And when you go in-house, your agencies take you to lots of fun events and restaurants. I've been totally spoilt going to work events - Wimbledon, world cups, chefs tables etc
PM if you have any questions - I'd be happy to help