Insuring a Columbia 400 & weekend only insurance

Question for insurance experts -

Insurance for the Columbia 400 is absurdly high compared to other
similar aircraft, presumably because the premiums are loaded due to
lack of significant statistics. Any idea how long potential Columbia
buyers can expect to wait for the premium to stabilize?

Can anyone recommend an insurance provider who would be willing to
discount infrequent flying, like someone who would only need to carry
insurance Friday, Saturday, and Sunday?

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