No, not really.
You will have to wait the 5 turns and take some damage.
There is a way where you can shorten the time of Slow start, well not really since it can't learn those moves(maybe in doubles it could be possible).
The only way you can do that is by using Skill swap, Worry seed, or count on the opponent to use Gastro acid(not a very good idea).
If this Ability is replaced due to a move like Skill Swap or Worry Seed or suppressed by Gastro Acid, the Pokémon's stats return to normal.
But, since it can't even learn those moves, there is basically no way.
Hope I helped.