Replace 128GB M.2 2280 drive

My laptop came with a 128GB M.2 2280 drive. Besides adding an additional 8GB of RAM, I’d like to replace the current drive with a 250GB to 500GB M.2 2280 drive. Would the simplest method be to clone the existing drive to my EX4100 NAS and then pull everything to the new drive? Or is there a better method?