Buy e-car before the end of a leasing contract with other car regarding full promotion in 2022?

My current lease runs until the middle of next year. I am currently considering buying an e-car below 40,000 € for the time after that, rather than leasing it. For 2023 it was announced to reduce the promotion from 9,000 € (BAFA + manufacturer discount) to 6,000 €. Now I am thinking about how to continue in 2023. The currently preferred car has a delivery time of 5-6 months. Discounts are currently almost none and the leasing offers are becoming increasingly expensive. I could still stay until autumn/winter was In 2023 I tried to get a demonstration car. It both had the disadvantage that 3,000 € less subsidy could be pocketed. As an alternative, I would consider just how practical it would be to order the car in the coming weeks as long as a delivery can be assured in 2022. That would have the advantage of the increased premium. On the other hand, I would have about half a year two cars. less than 200 € per month. However, two cars would have to be insured (I don’t want to fully unsubscribe the leasing car). There is also a certain residual risk regarding the premium. Final decision does not seem to be the reduction to 6,000 € yet. Maybe next year there would be more discounts by the manufacturer himself to compensate for the difference. This is currently difficult to predict. Have you ever dealt with such a procedure? Is it useful?