Since I found this challenge fun I decided to do the strawberries also.
1 Jumps in 400m (Use Speedrun Strats)
3 Jumps in 700m (Use the regained dash from the berry so you won't have to jump again off the cloud)
1 Jumps in 1400m (Use spike clip)
Here are some ways to avoid jumping in Old Site and 1300m (I did a spike clip there like what Parchment did though no need to change polarity):
Also while routing this, I found another way to do 1500m: