Rolling 3 month not filtering correctly

Hello, I am currently struggling with getting a rolling 3 month calculation to work as expected. In the screenshot below you can see that the column "Avg. Open Days per Week", counts the day name where a location is open (in this case it is all Monday, and 1 is the correct return). I added in a rolling 3 months column that calculates the previous 3 months depending on a date slicer (in this case the max date is 12/31/2023). Can someone help me understand why dates past 9/1/2023 are being calculated? 

For context, each row header is a "WeekBeginning" data point from a Date Dim Table. 

Here are the various DAX measures I have tried that continuoulsy gave me an incorrect result:

Measure try #1:

VAR _Dates = LASTDATE('Date Dimension'[Date])

VAR _DaysWeek = 
CALCULATE (
    COUNT ( 'Date Dimension'[DayName] ),
    FILTER (
        'FactTable',
        'FactTable'[Include] = "Include" 
    ),   
    ALLEXCEPT ( 'Date Dimension', 'Date Dimension'[WeekBeginningDT] )
)

VAR _Rolling3 = CALCULATE(_DaysWeek,DATESINPERIOD('Date Dimension'[Date],MAX('Date Dimension'[Date]),-3,MONTH),
    FILTER(ALL('Date Dimension'),'Date Dimension'[Date]<= _Dates)) 

RETURN
_Rolling3

Measure try #2:

Rolling3MonthDaysOpen = 
VAR _Dates = LASTDATE('Date Dimension'[Date])

VAR _DaysWeek = 
CALCULATE (
    COUNT ( 'Date Dimension'[DayName] ),
    FILTER (
        'FactTable',
        'FactTable'[Include] = "Include" 
       && 'FactTable'[Date] <=_Dates &&
        // 'FactTable'[Date] >DATEADD(_Dates,-3,MONTH)
    ),
    DATESINPERIOD('Date Dimension'[Date],MAX('Date Dimension'[Date]),-3,MONTH),
    ALLEXCEPT ( 'Date Dimension', 'Date Dimension'[WeekBeginningDT] )
)


RETURN
_DaysWeek

Measure Try #3:

Rolling3MonthDaysOpen = 
VAR _Dates = LASTDATE('Date Dimension'[Date])

VAR _DaysWeek = 
CALCULATE (
    COUNT ( 'Date Dimension'[DayName] ),
    FILTER (
        'FactTable',
        'FactTable'[Include] = "Include" 
    ),
FILTER(ALL('Date Dimension'),'Date Dimension'[Date]<= _Dates 
&& 'Date Dimension'[Date]>DATEADD(_Dates,-3,MONTH)
    
    ALLEXCEPT ( 'Date Dimension', 'Date Dimension'[WeekBeginningDT] )
)


RETURN
_DaysWeek

For reference, the "Avg. Open Days per Week" measure is as follows (and works as intended):

DaysOpenPerWeek = 
VAR _DaysWeek = 
CALCULATE (
    COUNT ( 'Date Dimension'[DayName] ),
    FILTER (
        'FactTable',
        'FactTable'[Include] = "Include" 
    ),
    ALLEXCEPT ( 'Date Dimension', 'Date Dimension'[WeekBeginningDT] )
)

VAR _WeeksPerMonth = DISTINCTCOUNT('Date Dimension'[WeekBeginningDT])

RETURN
ROUND((_DaysWeek/_WeeksPerMonth),0)