Deliberate Overfeeding

At the risk of possible massive overfeeding, you can reduce the number of feeder statements.

You do this by simply feeding the entire Month dimension with one feeder statement in the rule for the Plan cube:

['Planned Production Qty - Kgs'] => ['Planned Production
Qty - Kgs', 'Total Year'];

Feeding the consolidated element Total Year feeds all of its components; thus any value for Planned Production Qty - Kgs in any month will feed all the rest of the months.

In a small, dense cube like the Plan cube, the effect of overfeeding may well be negligible; and such a feeder has the great advantage of being very simple.