The time to actually apply the trading method and trading strategy you had in mind is during the day trading period and the subsequent period of high volatility.
After a period of great volatility, it is not a time to practice trading because a full-fledged uptrend begins.
Since there is a possibility of bottoming during day trading and periods of high volatility, you can get sufficient trading practice as long as you properly control the proportion of your investment.
If you practice trading with altcoins that you are considering as a mid- to long-term investment, you will not have much of a burden even if you record a loss after purchasing them.
Since it is a mid- to long-term investment anyway and I traded with an amount equivalent to the first purchase, I think I can practice trading sufficiently.
It is not necessary to practice day trading or short-term trading, but in any case, a certain level of day trading skills is needed to trade at the buying and selling times necessary for mid- to long-term investment, so the opportunity is there. I think it's a good idea to practice while you have it.