Try this in K15 copied across to L15 and down to M21:
=INDEX(D$15:D$32,7-WEEKDAY(DATE($C$8,MONTH(DATEVALUE($D$8&" 1")),$E$8),2)+ROWS(K$15:K15)-1)
and this for the second week:
=INDEX(D$15:D$32,7-WEEKDAY(DATE($C$8,MONTH(DATEVALUE($D$8&" 1")),$E$8),2)+7+ROWS(K$15:K15)-1)
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