That strategy requires you to have good timing on the market. But the problem is, by doing so, it will make you emotional and you will be prone to make mistakes making you lose some of your money.
If you want the best strategy for ordinary investors like us, "buy the dips". If you have a job you should save 20% of your monthly salary and make that available to buy when Bitcoin's price is falling.
I will also use that strategy to apply to my investment later. I will wait for the bitcoin price to fall for then I buy it. Then I will hold and hold bitcoin until bitcoin price skyrocket and I will sell it. I think that is the wisest strategy to apply here.