Is there a way to invoke the model and still maintain the input layer?

Hi,
I am building a MCU application with very limited RAM and I want to have an overlap in the consecutive inputs of my tflite model. Invoking my model will empty the input layer, therefore I must maintain a copy of the input layer which costs too much RAM, which could be used for a better model. Is there a way to keep the input layer when invoking the model?