Horizontal space between columns without spanning horizontal line in cmidrule

In the following table, I wish to add a horizontal gap between columns 3,4.
All the solutions I found involved adding hskip 1in inside the first column brackets (c{hskip 1in})
Which makes the line above cccccc span that extra space

documentclass[10pt,twocolumn,letterpaper]{article}

usepackage{graphicx}
usepackage{varwidth}
usepackage{floatrow}
usepackage{float}
usepackage{array}
usepackage[export]{adjustbox}
usepackage{subcaption}
usepackage{cuted}
usepackage[font=small,labelfont=bf,tableposition=top]{caption}
usepackage{arydshln}
usepackage{amsmath}
usepackage{booktabs, caption, multirow, siunitx}

usepackage{array}
newcolumntype{P}[1]{>{centeringarraybackslash}p{#1}}

begin{document}


begin{table}[t!]
%~
% smallskip
centering
resizebox{1textwidth}{!}{%
begin{tabular}{P{1cm}P{1cm}P{1cm}P{1cm}P{1cm}}
toprule
& multicolumn{2}{c}{SO(3)textsubscript{45}/SO(3)textsubscript{45}}& multicolumn{2}{c}{SO(3)textsubscript{45}/SO(3)}
cmidrule(lr){2-3}
cmidrule(lr){4-5}
textbf{aaaaaa}  &textbf{bbbbbb}&textbf{cccccc}
&textbf{dddddd}&textbf{eeeeee}


midrule
a
&0%&0%&0%&0%
 
b
&0%&0%&0%&0%

noalign{vskip 2mm}  
  bottomrule 
  noalign{vskip 2mm} 
 
c
&0%&0%&0%&0%
 
d
&0%&0%&0%&0%

e
&0%&0%&0%&0%
 
f
&0%&0%&0%&0%

g
&0%&0%&0%&0%

noalign{vskip 2mm}  
  bottomrule 
  noalign{vskip 2mm} 
  
h
&0%&0%&0%&0%
 
 
bottomrule
end{tabular}%
}
caption{.
}
label{Tab:faustso3}
end{table}

end{document}

documentclass{article}
usepackage{nicematrix}
usepackage{booktabs}

begin{document}

begin{table}[t!]
centering
begin{tabular}{wc{1cm}wc{1cm}wc{1cm}cwc{1cm}wc{1cm}}
toprule
& multicolumn{2}{c}{SO(3)textsubscript{45}/SO(3)textsubscript{45}}&& multicolumn{2}{c}{SO(3)textsubscript{45}/SO(3)}
cmidrule(lr){2-3}
cmidrule(lr){5-6}
textbf{a} &textbf{b}&textbf{c}&&textbf{d}&textbf{e}
midrule
a&0%&0%&&0%&0%
b&0%&0%&&0%&0%
noalign{vskip 2mm}  
bottomrule 
noalign{vskip 2mm} 
c&0%&0%&&0%&0%
d&0%&0%&&0%&0%
e&0%&0%&&0%&0%
f&0%&0%&&0%&0%
g&0%&0%&&0%&0%
noalign{vskip 2mm}  
bottomrule 
noalign{vskip 2mm} 
h&0%&0%&&0%&0%
bottomrule
end{tabular}%
end{table}

end{document}