Note for those watching: Due to Roblox fixing the thin wall glitch, this glitch is almost completely impossible to perform. It will take minimum of 20 tries to complete. Even then, there's almost NO chance of you getting there within one minute.
In simple text: Basically do a speedrun in under 60 seconds, make sure you have the christmas plushie, then go to the last house and using the plush keep equipping and unequipping it till you get there, this will be kinda difficult but it just takes practice