Admin Moron Alert

Hi all, I have been buying BTC via DCA for nearly two years and dumping into cold storage. As title states, I’ve done a crap job of figuring out what my cost basis is, and I’ve only used one platform to buy. While I’m mainly a Hodler, I would like to “layer out” with some BTC if we get a nice price appreciation later this year. So, my admin question is:

Other than creating a spreadsheet, is there an easier way to do this? Seems like a lot of damn work.

Thanks in advance and I don’t respond to DMs.