I found this tutorial with exactly what Im looking for for my website
https://www.youtube.com/watch?v=WkT3rpTeGGU&t=773s
however its for brooklyn theme
Anyone done this or can explain how i do this for my dawn theme
Really want to add an upsell without an app by using code
thanks
Hey my friend,
Jan here, author of the original video ! 
(Coding with Jan)
I just uploaded a new version, showing how to add the cart upsell on dawn 15.2. (most recent version)
Hope you find it useful!
Shopify Upsell Offer in Cart Without an App (Shopify Coding Tutorial)
https://www.youtube.com/watch?v=ZW9zcoxrezA
Cheers
Hey,
this is Jan (Coding with Jan / original author of the video).
A few days ago I released a new version of that video, showing how to implement the upsell on the most recent version of the dawn theme (15.2).
https://www.youtube.com/watch?v=ZW9zcoxrezA
Hope that’s useful!
Hey this is Jan!
(Coding with Jan, author of the original video)
I’ve just released a new version of this video (working on Dawn 15.2). 
But it seems I can’t reference it here without getting flagged as spam.
So you might just need to look it up on the channel, the title is:
Shopify Upsell Offer in Cart Without an App (Shopify Coding Tutorial)
Hope that’s useful
