Low Memory error on Bangle JS 2

Hello,
I am trying to make an app with multiple clock faces and implement functionalities using touch.
I am uploading the images in this post for your reference.
I just wish to implement a simple activity; the image with all the activities would lead me to an individual activity when I touch the screen, and then one more tap should lead me to the timer.
I tried implementing it by putting the code for the timer in the if-else condition. For the simplicity of understanding, I am not posting the entire code here but am replacing them with function names.

function selectOnTouch(n, event) { 
if(event.y<60){ walking();}
else if(event.y>=60 && event.y<120){jogging();}
else{cycling();}

If I make another function of touch inside some function, like Walking, it gives me a Low Memory error.
For Eg,

function selectOnTouch(n, event) { 
if(event.y<60){ walking(){function selectOnTouchTimer(n, event1) {timer();};}
else if(event.y>=60 && event.y<120){jogging();}
else{cycling();}

Could someone point out the mistake/suggest to me how I should change my code? Is there another way I could implement this ?

Thank you in Advance!
Pranjal

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