Expanding SSD in Razer Blade 15 (2020)

Hey guys I'm awaiting delivery of my Blade 15 base model and am getting prepared for it by looking into additional storage options as the 512GB doesn't feel like it'll be enough. I could invest in an external SSD/HDD but wondered if there was any additional slots in the laptop for me to add a second SSD or a HDD internally on top of the original. If so, i'm open to any recommendations on what to buy! Thanks in advance