Basically, what you have to do is either...
A) start over and try getting up to level 7 before christmas
B) don't be such idiots and cheat
For one, the game has plenty of ways to get money and lp. There's not really an excuse for you to cheat. I spent loads of my money on buying things to complete goals, now I only have 546 simoleons. I don't cheat, I just work hard, plant, go to work, complete goals and level up. You brought it on yourselves if santas gone.
Honestly there's no need to cheat you just spoil the game
"Danger is real, fear is not"