Phrase library and templates for strings passing to ESP32 devices?

Hardware
1

I am using the ESP32D0WDQ5 chip on the LILYGO TTGO T-Camera ESP32 WROVER

I am writing YAML code, compiling it in ESPHome and flashing it to the board using esphome flasher.

The TTGO card is capable of displaying text in a display, but the downside would be to refresh the board when I want to make changes to the tekst.

So: Is there a way to make the board read a string/template from a template library in Home Assistant, instead of having to hardcode and re-flash the board for every change?

This is the YAML part for the display

display:
  - platform: ssd1306_i2c
    model: "SSD1306 128x64"
    rotation: 180
    address: 0x3C
    lambda: |-
      it.strftime(64, 0, id(tnr1), TextAlign::TOP_CENTER,"%d-%m-%Y", id(homeassistant_time).now());
      it.strftime(64, 64, id(tnr2), TextAlign::BASELINE_CENTER, "%H:%M", id(homeassistant_time).now());

My idea is to create some kind om lambda_template.

The time is passed to the board using this:

time:
  - platform: homeassistant
    id: homeassistant_time

Any ideas on how to do this would be very much appreciated.