What best can be done to generate forecast for Combination with not enough historical data points?

Summary:

We are using last 36 months of history to generate forecast. PeriodsUntilInactive is set as 365 days & EnableNaiveForecast=1. We are using all 15 forecasting models so that any one or combination of them can generate forecast. Our client is expecting if in last 12 months, 1-2 data historical data point (e.g. 10 months or 11 months back) is present, Demand Management engine should generate forecast.

Please help.

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