This was the point of the level squish: Reducing the leveling process to about 6 hours. Otherwise the grind in shadowlands is much smaller in Shadowlands compared to BFA. Even in the leveling experience people are now noting that BFA leveling & 120 experience was really artificially prolonged.
Individual Soulbinds, the largest grind, are shared among all your characters, making switching classes much easier in the same covenant.No there are no shortcuts.