Yes. If you're stuck with that limitation, you pack up related textures into a big texture atlas. When you enter a new area, the player sees "Loading..." while the next batch of content is loaded. That was the state of the art 15 years ago. It's kind of dated now.

You might be getting “sampled textures in a single call” with “total textures loaded” mixed up. Sampled texture limits affect complexity of your shader and have nothing to do with loading content from elsewhere.