Why not to use Blackfolio or any other application that tracks your investment in real time? It works great, is accessible on mobile devices and is much easier to interact with. I do not see any point in using excel instead of a regular app.
Blockfolio is indeed a great app to track your crypto portfolio but I would like to mention also the Delta app as an alternative which I personally prefer because it has its own unique features which I find attractive -
https://play.google.com/store/apps/details?id=io.getdelta.android&hl=en . These two apps should suffice our own crypto portfolio tracking needs and its up to us what we will choose.