Returning to main menu after calling a different script

I am having a menu based script which calls for an additional shell script. The challenge is that, after the additional shell script is finished, instead of returning to the main menu, it exits completely.

The code is something like this:

options=("Deploy code" "Backup a directory or file" "Transfer file SCP" "Start tool b" "Quit")
select opt in "${options[@]}"; do
   case $REPLY in
      1) command1; break;;
      2) sh ./backup-script.sh; break;;
      3) test1; break;;
      4) bla2; break;;
      5) break 2 ;;
      *) echo "Invalid option selected" >&2
   esac
done

backup-script.sh is having the code:

#!/bin/bash

# define params
read -p "Provide full path of file(s) or folder(s) you want to create a backup of: " param_backup
backed_up_path=$(echo "${param_backup}_bkp_$(date +"%Y-%m-%d_%H-%M-%S")");

# execute backup with params
echo 
echo "Attempting to create backup of specified file(s) or folder(s)..."
if cp -prvf ${param_backup} ${backed_up_path} 
    then
        echo
        printf "\033[1;32mSUCCESS: Backup created!\033[0m\n"
    else
        echo 
        printf "\033[1;31mERROR: There was an error and the backup could not be performed.\033[0m\n"
        printf "\033[1;31m       Please try again and make sure that the source path is valid or exists!\033[0m\n"
fi
echo

Tried sourcing the script and then using return function, but it didn't helped (or I have done something wrong).

Any idea on how to return to the main menu after the backup-script.sh is finishing running?

Thank you!