Interesting story, according to you, the purpose of this investment is long term, however, I'm wondering how you considered Bitcoin as your best investment? Don't get me wrong, but, the amounts being invested are quite small, considering Bitcoin's value. I believe that sometimes, investing in some other reputable altcoin, such as Ethereum, Cardano, Binance and many more, is deemed more profitable than purchasing Bitcoin.
I am sure that if he can invest in Bitcoin continuously with that kind of method, he will acquire many.
Let's see how he always invests every week for months.
He is always trying to add around 10$ in every week start and he continues it every month.
If he can do it continuously, he will accumulate more Bitcoin.
And well, for here, with that amount, I personally like how he chose only Bitcoin. I know that he said he wanted to invest in it for a long time. So, his purpose may be for long-term investment.
Dollar cost averaging is the best way to accumulate more bitcoins and keep them for long term. I am also buying bitcoins on every month saving and keep them locked in my wallet.