I'm waiting until August to make any decision, see how things are looking in Moscow at that time, but it's likely I won't pre-buy this year. I usually pre-buy, and other than once (when I lost almost enough to undo the prior 5 years' savings), it usually saves me some money. But I believe oil prices are peaked right now, I really do expect them to drop during the next 12 months, the period in which I'd be using any pre-bought oil.
The Russian public and oligarchs are miserable right now, their economy is in the toilet, they can't even manufacture their basic needs. Not just the folks at the bottom of their social hierarchy this time, as is usual for that unfortunate country, now their most powerful oligarchs are losing nearly everything. The chances of Putin staying in power even another year seem to lower every day, it seems more likely that inside forces will likely remove him from power before the next heating season is half over. If or when that happens, there will be a groundswell of effort to get those international economic gears turning again. Remember the 1940's program "food for toys", between the USA and Germany, but this time it will be "food for oil" between Europe and Russia.
The heating oil and gasoline markets are complex, and I won't pretend to have any deep understanding of their correlation to the availability of oil products from Russia. I'd be interested to hear from others on what they expect the result of a likely change in power in Russia, and subsequent withdraw from Ukraine, might mean to our energy prices.