I want to rearrange the bars in the following graph. i want to show CT and HS bars side by side , for example first 1DAS CT and HS bar then 15DAS CT and HS bar and so on. I am using the following code

ggplot(data, aes(x = Genotype, y = Pn, fill = DAS)) +
  geom_col_pattern(aes(pattern = Treatment), pattern_color = '#00000050',
                   position = position_dodge(0.7), width = 0.5, 
                   color = 'gray50',
                   pattern_angle = 45, pattern_spacing = 0.02) +
  scale_pattern_manual(values = c('none', 'stripe'),
                       guide = guide_legend(override.aes = list(fill = 'white'))
  ) +
  scale_fill_brewer('Species', palette = 'Pastel2', 
                    guide = guide_legend(override.aes = list(pattern = 'none'))
  ) + 
  theme_minimal(base_size = 16) +
  theme(axis.text.x.bottom = element_text(face = "bold"),
        panel.spacing.x = unit(0, 'mm'),
        panel.grid.major.x = element_blank(),
        axis.text.x = element_text(angle=90))

and i got this graph in which for each genotype first it showed CT bars and then for HS bars.