Which pen nibs do i need for my Nova Air?

Hey,
i yesterday got my Onyx Nova Air in the mail.. but i heard online that you need to replace the Stylus Pen Nibs really often (from a few weeks to 6 months i read everything).. so i currently search for replacement nibs for it.

But somehow all replacement nibs i found are for the Note Air, not Nova Air.

so.. where can i get replacement nibs for the Nova Air? Even the Note Air nibs seem to be rather expensive if you need to replace them really that often (20-25€ for 5 nibs) :chinscratch:

and after reading online how often people replace their nibs, i'm now even a bit scared to use my pen lol :sos:

greetings