Button with countdown

Hi,
I have a node red flow that turns on an extractor fan for 5 or 45 minutes based on how long the bathroom was occupied. To get a little more control I added a button to trigger 45 minutes extraction.

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}];\n}","outputs":3,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":580,"y":340,"wires":[[],["ad096a1b0c1eaf97","f4c030925783df81"],["1433737141efce67"]],"outputLabels":["0","5","45"]},{"id":"7212ec61447cea64","type":"api-call-service","z":"d086a8d693d80fae","g":"a51738c6d16f6a57","name":"","server":"2be748d3.da7088","version":5,"debugenabled":false,"domain":"fan","service":"turn_off","areaId":[],"deviceId":[],"entityId":["fan.en_suite_fan_switch"],"data":"","dataType":"jsonata","mergeContext":"","mustacheAltTags":false,"outputProperties":[],"queue":"none","x":1050,"y":400,"wires":[[]]},{"id":"1cdfe35d6416dfdd","type":"server-state-changed","z":"d086a8d693d80fae","g":"a51738c6d16f6a57","name":"En Suite Fan is 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The manual button is exposed to ha as button.bedroom_ensuite_extractor_45mins

Is there a way to display a button that shows the state - Off or On (xx minutes remaining) ?