I absolutely love the Money tree and found it to be a really fast grower and very easy-going for an indoor plant. My idea is also to get it to grow taller over the years as well. I got it this mid-summer in a 6-inch pot, it was about 11" tall only, its now 24" tall and is showing no signs of stopping growth, in fact, it's now growing even faster in fall.
I up-potted it right away to an 8" pot when I got it and changed the soil to a fine cactus mix (I used this one https://www.promixgardening.co...
I let the soil get quite dry - the top half is very dry and the bottom quarter is just a little moist before I water (check with bamboo skewer). Then I water fully till it drips from the drain holes.
In the water, I mix a 20-20-20 diluted to a quarter strength and add an organic enzyme to the water (GROZYME, from hydroponics store) - I don't actually know if the enzyme makes any difference it's just something I've been using
Anyways I think maybe your Money tree did need a new pot and perhaps it didn't like the soil it was in anymore, from what I've seen with mine if you want it to grow fast it does need a slightly bigger pot than original one, with fast drain soil and watering like a succulent (almost).