How to make a script wait for a certain part to load into the game?

local inTraining = player.Stats.inTraining

This code is supposed to reference the player stats that get loaded in when they join the game. But it keeps erroring saying that stats doesn't exist ( or isn't a valid member of player ).

I've already figured that the script is running before the player and their stats are loaded in. But I haven't been able to find a way to prevent the script from continuing to the rest of its code until the player's stats have been loaded into their player.

• Just a quick side note, but this is all being handled in a local script. The player variable references the LocalPlayer, and then the rest of it goes into a script loaded folder called Stats.

I tried doing:

while player:WaitForChild("Stats") do wait() end

But that seemed to make the rest of the script to not work for some reason and I couldn't find out why.

The whole point of the script, in general, is to see if the player is in training mode, which I have a bool value that gets turned on and off when they press a key. But I have it loaded into the stats folder that is in the player. It just keeps telling me the player stats isn't there or if I put in the second code above doesn't run the rest of the script. What should I do?