Thank you so much! The "use sparingly" was just me trying to somehow warn players of limit-mechanic I did to using space. Each time you use it, the cooldown gets a bit longer, which is to try and make the spamming of space a bit more discouraged. It's a mechanic I didn't get to test much and right now there is no indicator so I doubt any players even notice it, hehe. It was a last minute addition, so testing was on the surface level. And looking back, that wording might have been misleading too hehe :D
Since I'm planning on doing little more with this game I'm probably going to make some sort of indicator for when the player can use "space" and when they cannot, along with other balancing work for the overall difficulty. But regardless, glad to hear your feedback! ^^