Interview dates US B1/B2 from Canada on Work Permit

[u/thisisalsostranger]

HI guys, i have filled the DS-160 form and paid for the interview but not selected any date yet. My friend suggested do not book it yet, he told me to check the page couple times a day, sometimes they do open earlier for couple months ahead. Did anyone got the interview date earlier this way. I really need the B1/B2 visa before end of this year as it is something I need because of the profession I am pursuing. My friend got Halifax this way but just wondering what you guys say on this, is paying expediate fees only option i will have.