Has anyone the same issue with the spring event challenge?

Training is insane.

1st challenge: Freezel stats 900/875/875
2nd challenge: Freezel stats 21.2k/20.6k/20.6k

If i have to equal Sunshine stats to Freezel, i will have to train her in total for 132 hours.
Training for 4 hours gives +1717 bonus. Her dress gives a bonus vs +18%.
Power: (21200/1.18)/1717=10.46 blocks of 4 hours
Speed/Tricks: 20600/1.18)/1717= 10.16 blocks of 4 hours,
Means I'll have to train her a minimal for 33 blocks at 4 hours = 132 hours.

At the moment I just finished Cindy in the game, and wonder if resetting will help.