@jimmykiff Your ideal is 3-6 months of expenses
but there are other factors to think about. For instance, if you're drowning in debt, it's smarter to start with a small emergency fund of 500-1k and then dump any excess money into your debt. This way you still have enough to cover small emergencies like a flat tire or a few sick days while more effectively bettering your financial situation. Once your debt is at a reasonable point, then you can think of getting multiple months of expenses covered. Choosing 3 or 6 or anywhere in between is up to you and your risk tolerance. This money will hold you over if you lose your job, have a major family emergency, a major medical expense, etc.
Besides enormous debt, other factors that may make you consider starting with a smaller goal would be if you're majorly behind on retirement savings and need to catch up, or if you're expecting your car to give out any day and need to prepare to purchase a new one, or if you have a teen and need to catch up on college savings ASAP. No financial decision or financial advice is one size fits all. It's important to understand why they're giving the advice and then adjust according to your own life circumstances.
Edit: factors that may require you to save more for your emergency fund are if you're in a highly volatile field, meaning you're more likely to become unemployed, if your income is very unpredictable, if you have chronic conditions that lead to frequent medical bills, if you're in area with frequent natural disasters, high crime, etc., if you're living with a roommate that's unreliable with bills, if your parents are older or sick and you think you could be paying for a funeral in the next few years, etc.