Navy upkeep is too high

Hey folks! Is there a way to decrease navy upkeep (maybe submod on somehow manually change files?)
Wanna have bigger fleets in campaign

There is a mod Imperial splendour in which if im not mistaken recruitment is the same expensive but upkeep is very affordable so factions can have huge fleets.

So any ideas how to make fleets in Imperial Destroyer cheaper to upkeep? Like for example some admiral ship for Ottomans cots around 500 to upkeep, would be great to scale it down to 100 or so (both for player and ai)