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I am surprised by his idea to move tokens/coins to a new wallet monthly. Can I know what wallets he creates? MetaMask, MEW, or other wallets? Moving tokens/coins too often may risk the tokens/coins. It will be complicated to keep the wallet data and it also needs high transfer fees. Moreover, if your friend put all the coins in a single wallet. He may end up losing all the coins, or get bankrupt by too many transfer fees.
If he is a long-term holder, suggest him to put the token/coins on cold wallets or hardware wallets. It is the safest place to keep tokens/coins for a long time and it also will minimize the transfer fees. But if he is an active trader, I think he only needs to choose a trusted exchange and can put the coins there. Sending coins to cold wallets or hardware wallets whenever it is really needed.
Let your friend to read this article:
- https://www.investopedia.com/news/bitcoin-safe-storage-cold-wallet/
- https://academy.binance.com/en/articles/how-to-secure-your-cryptocurrency