Total Value based on maximum column value instead of sum

I have the following data coming from the below measure which splits the no of weeks based on the project start and end date.

Measure:

Actual weekly duration (By Month) = CALCULATE(SUMX(SUMMARIZE(FILTER(CROSSJOIN('FTE','Datetable'),'Datetable'[Date] >=(' FTE'[Start date]) && 'Datetable'[Date]<=('FTE'[End date])),'FTE'[Project Name],Datetable[Date],'FTE'[Actual Project Duration(In weeks)],'FTE'[Start date],'FTE'[End date]),DIVIDE('FTE'[Actual Project Duration(In weeks)],DATEDIFF('FTE'[Start date],'FTE'[End date],DAY)+1)))

Output:

Question: Now my measure sums up the no of weeks (values) for each month for each staff as shown in the above image. Instead of summing up the total, I need to show the maximum value for each month for eg For Anbu for Feb it is 3.91 and March 4.33 and for Apr 4.19 . Any help is much appreciated.