Create drop down menu in plotly for every subplot

Consider the following brief example

species <- split(iris, iris$Species)

p_species <- lapply(species, function(l){
  l %>%
    plot_ly(type = "scatter") %>%
      x = ~Sepal.Length, 
      y = ~Petal.Length,
      text = ~Species) %>%
      x = ~Sepal.Width, 
      y = ~Petal.Width,
      text = ~Species)

subplot(p_species, nrows = 2)

How do I create a drop down menu that lets me select the subplot I want? My goal is not to see the three of them in the same window but have the option to see each one separately.