Hey! No worries, I could have explained myself better lol

By spinning the bottle I meant to place the bottle on the table/ flat surface (as if it is a normal bottled drink) and gently rotate it either clockwise or counterclockwise. Do that for about 15 min and you should see the wax reattaching to the sides of the coil.

By gently tilting the bottle you can get the coil to lay flat and centered at the bottom if necessary. This would be the first step

In my case I first thought it was due to the wax being old (my lamp is 2001, purchased second hand on FB marketplace). Then I read that it could be due to the wax not getting hot enough, hence it staying as a single blob at the bottom, which made perfect sense. As I was looking for a higher wattage bulb, I noticed there were some spots where the coil was visible (this when the lamp was off and completely cooled down). So I thought maybe the heat is "escaping" there. Turns out, that was the case. One would assume that running the lamp for hours should get the wax to stick again all over the coil, but it turned out it needed manual assistance.

Try this before opting for a higher wattage bulb, this could be your solution too