Well, @gisella-albertini has provided a fantastic response which has had loads of options in - it’s a great response…so my response is really just another persons experience but I’ll avoid duplicating…
I live in Yorkshire so chatting with the locals doesn’t help the Welsh much 
…but I do go to a monthly SSIW meeting in Leeds.
This is great to meet fellow learners, get advice from first language speakers, see how you are doing and just have a bit of fun. So if there is one in your area I’d strongly recommend it - the SSIW newsletter is a good source to find meetings. Have you signed up for the newsletter?!
If you live somewhere else put a post on the forum asking if there is someone near you - you’ll be surprised!
Like Gisella I went through the levels myself - the structured courses came out just after I’d finished 
So having completed level 2, I simply progressed onto level 3.
Personally I found Level 3 just a natural continuation - there is no conclusion to be drawn from this - I think people are different…I think I may have not shot through 1 and 2 as quickly as Gisella - but everybody’s path will be different.
After level 3, I worked on the SSIW advanced content - which I found hard - but persevered.
After that and using the BBC Fwy website as a cheat sheet (see here) I found myself on the bottom rungs of Radio Cymru…and have been working my way upwards.
I now listen to the news twice a day and understand the substantial majority and feel I am improving everyday!
I am very happy with this! 
I will have been learning for two years at the end if October.
I hope that helps in some way, shape or form.
Good luck!
Rich 