Not many must get past the 6 months mark because website development can be very frustrating. Aside from a select few, most if not all see no significant money for a long time so you feel like you’re working for free, you get no reward for your work.
All in all though, no other business can earn such an insane cash/hour worked income while having 10$/month investment. For example, on one website I only earn 300$/month. But I worked 50 hours total on that website so when you think about it, each month that website earns me 6$/hour (on top of other websites). Better than working at Walmart.
Anyway, the best idea is to work part-time, earning enough to pay the rent, and focus the rest of your time on coding.