At first I thought it would be impossible for me to achieve 21 songs in 21 weeks. But I just looked back at my YouTube channel (videos at
https://www.youtube.com/user/pdebra/videos) I actually did manage 21 songs in the past 21 weeks (there are 23 videos but 2 of them are abridged versions of another one in the list).
So yeah it appears possible even when it requires making arrangements, recording on average 5 tracks per song, and mixing everything on the computer...
All of this was made possible by not having as many accordion repairs as usual (probably due to people not playing in their orchestras because of Covid).
I'm not making any promises for the coming 21 weeks though...