Adjusting Edge/Arrow Length in ggnet2

Question

I have made a network graph using ggnet2 and am wondering if there is any way to adjust the length of the lines that connect the nodes? I need the plot to be more compact.

The nodes are way too spaced out. If ggnet2 doesn't have an option, is there any way to program this with ggplot2?

sample code:

colour<- vector of group colour identifier
no_study<- vector of number of studies in the group
node.size<- vector of group standard deviation

plot <- ggnet2(network, color = colour, edge.size = no_study, node.size = standard_dev, label.size = 8)+ guides(color = "none", size = "none")

dput(df):

Thank you, Samantha