On Olympic Square Forward you are 3 main tips you have to know.
On the bump in the sidewalks at the last corner you can gain a little bit of speed by jumping over it. Not much but it helps for the upcoming corner.
The first corner of the track is done with 1 simple tap with both Stab on and Stab off, and slightly brushing the wall with stab off only.
The corner at the trees can be a bit tricky, but no DS is needed.