Surely back up funds can have different categories and even be loosely defined by some individuals, and part of the reason that I like to describe and differentiate three kinds of back up funds is in order to be able to show how they differ from each other, especially for someone who might be having to treat back up funds more seriously, especially if the back up funds might be for the purpose of protecting the bitcoin investment for 4-10 years or longer so that the bitcoin is not tapped into at a time that is not completely of the investor's choosing.
1) emergency funds are the last line of defense - so usually they should be at least for 3 months of expenses in local currency and used only for unexpected increases in expenses and/or decreases in income. Should be promptly replaced as soon as possible if used.
2) reserve funds - can be used for any reasons including emergencies, consumption, buying on dips or whatever reason.. optional whether to replace.. and surely the more erratic a person's income versus expense, then the more justification to keep more reserve funds.
3) floating funds tend to be the extra income that is held until monthly expenses are resolved.. once the monthly expenses are resolved, if there are any floating funds remaining, then those would convert into discretionary income that can be used to invest, consume or to add to back up funds (reserve funds and/or emergency funds)
The way you divided the back up fund into 3 parts is really amazing. I have never thought of it in such a specific way before. You have said that having an emergency fund for 3 months is enough. Yes, I agree with you. Many people want to have an emergency fund for 6 months or 1 year, I don't think it's necessary. It is enough to have an emergency fund for 3 months. If someone, like you said , divides their money into 3 parts and saves it according to the theory of reserve fund and floating fund , then they will be able to continue investing in bitcoin, avoiding all kinds of obstacles in continuous investing, in any kind of situation. Investing in bitcoin consistently is one of the ways to get good feedback in the future. Now I want to know one thing, that is if someone has the mindset that I will invest in bitcoin regularly every month for the next 5 years. So will he fix a specific amount that I will invest 20% of my income in bitcoin ..or will he buy a specific amount of bitcoin regularly….. for example 0.0000085 bitcoin can be bought for 100$. Will he fix it that he will buy bitcoin for 100$ or 0.0000085 btc regularly, no matter what the price is.