Best term for this by OP is, "Buy and forget"
By doing this, we are prone not to sell our holdings even when the price of Bitcoin goes down a roller coaster. And in this way also we are busy with other things so we can forget to check every time the market or the price of Bitcoin which will help us not to worry or panic just incase the price of Bitcoin dumps.
Before you forget, make sure to preserve your seed phrases properly so that you can forget today and smile tomorrow, failure to secure it, then you would forget today and cry tomorrow.
Security comes first and you'll need to be periodically validating that your seed phrases is still intact where you kept it , so it doesn't get tampered by human actions or natural factors.