I would agree that in a pale Belgian normal white sugar will work well. It won’t be exactly the same but close.
Yeast is very good at eating sugar in fact the scientific name for yeast, Saccharomyces literally means Sugar Eating.
There is no benefit in inverting or otherwise modifying normal sugar.
My first choice would be to dissolve it in boiling water, allow to cool and add it to the ferment when the SG has dropped by about what you are adding. Just to lower the OG of the brew reducing stress on the yeast.
One other point that is important. You can make Candi Sugar or Syrup at home; it just won’t be Belgian Candi syrup. That is made from Beet Sugar not Cane Sugar (not to mention that this isn’t Belgian) and they aren’t the same. Especially when you get to the darker versions. If you think it will be taste test Treacle and Dark Candi side by side.
Mark