He must be tired for sure because farming is not easy and he wanted a life with passive income, which for sure he is planning to migrate to other businesses, but it is really true that farming is really important, but we do have our own dreams like quitting our job now and having a business, but the point really of the OP is investing in Bitcoin because they want profit, which is passive and can add up to their capital, but the problem is that they are more focused on profit and not thinking about the risk.
If that is the case, he has to use the modern way of farming or he can still use manual labour ( that is take labourers) to farm for him and while he focus on each new business in bitcoin. Mine is, I don't want him to quit farming because if he quit farming because of bitcoin, he will still buy farm products from the money made from bitcoin so instead he should do the two at once. He can engage himself with bitcoin while his labourers work in the farm for him. How do you see that?