Inflation wont go away imo but theres enough gas in the world they can reverse prices. a lot of it depends on the Russia situation, for all we know they invade Ukraine and gas prices in a year are doubled again. Scottish power for example has a license to import gas from USA its not ideal but they can ship it over in great quantities and USA is far cheaper, we also import from Norway and Qatar so it shouldnt spike in theory.
Time decay is normal in pricing, they can raise supply and thats the most likely outcome. USA has enough gas to never use oil again, UK even we can supply ourselves if we just invest in that capacity; takes time but normal scenario is price unwinds from abnormal 'surprise' demand because supply is not constrained when margins allow production expansion same in every commodity.
Weather is a factor, next April you wont even need the heating absolutely you can adjust usage its a choice so I'd take the gamble but if you are 70 maybe you have to fix