Am I able to record a ng+ run cus I just got a 3:02 run sadly didn’t record it and would happily do it again but I wanna keep my weapons or is that not allowed for the speedrun cause I don’t see a ng+ option

No, sorry. The rules say "Runs must be done on a fresh save file and show character creation."

You can use it for practice or try and beat your own time for fun, but it won't be eligible for the leaderboards.