Extract data from specific cells in multiple excel files - R

I need to extract data (date, time) from two cells (E6:E7) from multiple excel files and then store that data into a data frame (with separate columns for date and time).

See below for the code I've tried.

setwd("C:/Users/tsamuels/Desktop/PDRA - Collins/growth_rate_folder")
file.list <- list.files(path=".", pattern="\\d.xlsx$")
df.list <- lapply(file.list, read_excel(path=".", sheet = 1, range = "E6:E7", col_names = FALSE,
                                        col_types = NULL))

Any help appreciated!