Since we're already on the Mala Martuljška Ponca page: also with the help of photos and descriptions on this website, I went (and returned) to MMP in 2019. At that time I also left my track here (in the GPS tracks tab).
https://www.hribi.net/gps_sled/konec_gozdne_ceste_parkirisce_-_mala_martuljska_ponca_mala_martuljska_ponca/702 You can see what kind of mountaineer I am from the line or track where I walked

Nevertheless, I hope it helped someone.
Tone: your sentence caught my eye: " Down veeery slowly, because the left knee is completely in th..." I assume you have a worn knee. I had similar problems myself, especially on descents. The next year I had surgery and got an "artificial" knee (total endoprosthesis). And now I walk much, much easier than before. If you have a similar situation - I hope everything will be fine.
The GPS track also shows that on the way back I went to the Three Larches. Then partly because of the knee and also because I didn't know or dare to go further down, I returned over the scree to Kotle and descended to the valley.
Kostja: you mention that you went down past the Three Larches. Do you have any more photos or can you write (or someone else), where and on which side is the most suitable descent from the Three Larches.
The logbook was already quite poor in 2019. Thanks for the renovation.