Need help updating graph sort order

Hi RichOB 

Please try this:

Here I create a set of sample:

Table with data from 2024,1,1 to 2025,12,1:

Then add a calculated table:

Table 2 = 
SUMMARIZE (
    SELECTCOLUMNS (
        'Table',
        "Month_name", FORMAT ( 'Table'[Date], "MMM" ),
        "Month_number",
            VAR _month =
                MONTH ( 'Table'[Date] ) - 3
            RETURN
                IF ( _month <= 0, _month + 12, _month )
    ),
    [Month_name],
    [Month_number]
)

Select the [Month_name] and click sort by [Month_number]:

Connect the Table and Table 2 with the field Month_name:

The result is as follow:

.PBIX file has attached.

Best Regards

Zhengdong Xu
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