After 1 year, I just came back to honor 1. Here is some advice
Don't do it. Seriously. It takes a mind-boggling time. it also makes you lose morale to do ranked since you get no reward, and you basically lose access to free cash which is loot boxes. the penalties have a more punishing effect than you can ever think. You can go from checkpoint 3 to 0 in a blink of a eye, which each checkpoint can cost you a month of intensive gaming.
DON'T RISK IT. There is basically nothing "worth" if you are honor zero.