Help with forecasting some data

I need some help forecasting future sales for a set of SKUs. I have three years of historical monthly data, and I would like to know which type of model you would recommend, what variables should be included for each SKU, and whether this time span is sufficient to forecast 12 months ahead.

Thank you in advance for your support.

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I think we need to know what you have already done, a bit of detail on your data' plus we need to see your code and some sample data.

Hard to know for sure how your data looks like. A good place to start (if you haven't already) would be the fable package and start looking into temporal dynamics of the data.