Hello everyone!
I have this monstera for over a year (gonna be 2 years next march), and I grew her from a stem cutting with 2 leaves. And she suddenly dried out 2 bottom (old) leaves. Shall I do something or it is normal process?

Quite a while ago (maybe beginning of the year) first of the 2 old leaves yellowed and dried out. I kinda knew its fine and nothing else happend. So it was ok and she kept growing bigger.
Recently (last week) second of these 2 leaves yellowed and also dried out slowly. I thought its ok and same procees as before, cut it and didnt mind it. But today third leaf (so the leaf that grew first from the baby stem over a year ago or so) started to yellow too. No oedema, no pests 100% (looked everywhere and I brought no new plants home since beginning of summer (and they all go through long quarantine. And weather outside is cold already, so no opened windows). I havent changed the water schedule or anything. The leaf looks like it just slowly fades to yellow, same as all leaves before.
I repotted her in March this year and I thought shell be ok with repotting till sring but she grew a lot of roots and 2 big leaves since then. Maybe not enough soil? Or she is just drying off older leaves so main ones get more nutrition? Perhaps I am too worried but she was my first plant to take care of and she is so dear to me, I panic something might happen to her 😨

P.s. I have light for about 12 hours daily, and slow release granular plant food mixed into soil (osmocote). Soil mixed with perlite, coco chips, moss, bark. Pot is well drained. Water once a week.

Yellowing leaves for unknown reason