In case it hasn’t been answered yet, if you had a profession from day 1 there’s a group of three NPCs next to the crafting order platform. If you were there since day 1, doing every single thing, you would get… 1 quest from each of your profession trainers, 1 crafting order quest for each crafting profession, from the two NPC’s to the right, and 1 quest from the 3npcs on the left. If you are behind… You get two quests from the NPC’s on the left.
Additionally, the random profession knowledge point drops are limited by the week, but if it’s week 6, and you change professions, you can get all 6 drops in one day.
You’ll still be behind, but that will always be the case in an MMO if you start late or took a break.