Is 9,768円 Propane Gas Bill Normal for Solo Living?

I wanted to hear other’s opinion first before contacting the company for consultation. For context, the gas company is Enechita. And the whole apartment is LP gas so I cannot switch to city gas even if I prefer it more.

Although IG 9,768円 is understandable considering that I mostly take showers 2 times a day approx. 10-15 mins duration at 42C, my sink is always at 38C, and I cook using a gas stove for like 2-3 times a week this month. Is this really an appropriate billing amount?

by SufficientVehicle683