You don't have to use all your money to invest, even if you are not married yet or have other responsibilities, the best approach when planning to invest in Bitcoin is to buy with some percentage of the money you earning, maybe through business or a job.
it looks like your friend is pushing his skills too hard for a big option. it all depends on how strong he is withstanding the pressure he will get when more financial problems your friend receives.
however he is your friend, even though it is troublesome, maybe you can help him a little regarding needs. instead of giving him money to survive. because maybe he will use some of the money he has to enter the market again.
let him work hard to solve his problems. if the pressure gets bigger, however, he has to let go of the Bitcoin investment he made to solve all the problems.