Funny that you asked...
my SiL just applied and got it. Sunday night apply and pay, monday was able to select interview slot for Wednesday 945am. Other options were scattered around for next week and the week after that. However bulk of the slots are for the end of the month, so the website is pretty accurate showing interview availability in 3-4 weeks.

also check if you qualify for interview waiver: https://www.ustraveldocs.com/my/en/renew-visa/

This post has been edited by miuk: Sep 8 2023, 12:27 PM

Are you sure you're looking at the correct website?

Interview Required Students/Exchange Visitors (F, M, J) 20 Calendar Days
Interview Required Petition-Based Temporary Workers (H, L, O, P, Q) 22 Calendar Days
Interview Required Crew and Transit (C, D, C1/D) 29 Calendar Days
Interview Required Visitors (B1/B2) 29 Calendar Days
Interview Waiver Students/Exchange Visitors (F, M, J) 1 Calendar Day
Interview Waiver Petition-Based Temporary Workers (H, L, O, P, Q) 1 Calendar Day
Interview Waiver Crew and Transit (C, D, C1/D) 1 Calendar Day
Interview Waiver Visitors (B1/B2) 1 Calendar Day

You dont need a new visa, just bring along the old passport book containing the visa together with your current passport when you travel.

hard to visualize without actually looking at the passport but in general as long as the biometric page and the visa is intact it should be fine.