Generally two things are true about moto theft insurance:

1) It depends very heavily on the motorcycle itself. Usually only available for new or nearly-new motorcycles. Around here, KASKO-type comprehensive insurance (including theft, vandalism etc.) is available for cars up to 10 years old, and motorcycles even less. My motorcycle is from 2008, I bought it in 2018, and even then no insurance company would even give me a quote.

2) Nobody will want to sell you insurance for only 2 months, or at least if they do, it will be prohibitively expensive.

Think of how insurance works: you and everybody else constantly contributes small payments to a common risk pool, and that pays for the rare occasions when some contributor needs a large payment out of that pool. It's not possible to have cheap insurance with an expensive payout (the cost of a motorcycle in Denmark!) and a high likelyhood (theft of an expensive, easily portable item in a developing country) and a tiny user base (how many motorcyclists ride through the Stans, in absolute numbers?).

You can get short-term coverage for mandatory insurance because literally every vehicle on the road contributes to that pool - and even then, your contribution would be proportionally much bigger than everyone else's. E.g. my mandatory bike insurance is 60 euros for 8 months, but if I were to get it for 2 weeks, it would be something like 20 euros.

For what you are looking for, the cost of 2 months of insurance would be very close to the value of the bike.