I missed out on doing the customary celebratory post for finishing both of my trees... so I'm going to make up for it now. After about two and half years, I reached Level 25 in Italian yesterday and in German just now.
The best thing about is that I forced myself not to take on other trees until I reached Level 25...so now I can start another one...or two!
Thank you! Yes, for Italian I've already started doing some self study and am about to put a lot more focus on that.
One of my goals is to be C1 or C2 level in four core European languages (French, Spanish, Italian, and German), and then a few other languages that interest me at a lower level. I passed the DALF C2 exam a while ago in French, but I have a long way to go for the other languages.
For now, I plan Italian to be my main focus to bring it up to a solid B1, inching towards B2. On Duo, I'm going to see about bringing back my rusty Spanish, with a bit of Catalan when I fancy a break! German is just going to have to wait, unfortunately.
I wish I was as dedicated as those who have a streak that long! I'm afraid I tend to have big bursts of duo activity and then go a long time without doing anything. It's only in the last year or so that I've been more consistent, and that has made the difference for getting to Level 25.