My first EC2 instance was created in 2015, and was a t2.micro for Free Tier. I've been using it for testing.
Since it's been years so I'm no longer eligible for Free Tier, so I keep paying for it.
Until recently I found that I need it to be faster and with larger storage (it was 30GB for Free Tier).
Googled for how to migrate your EC2 instance and saw many TLDR documents, not sure why do they have to use such a long article instead of an easy step by step instructions.