Idea for Quality of Life Buffs: Early Cancels for Auto Enhancing abilities

I want the ability to cancel my auto enhancing ability early, letting it to go on cooldown, maybe after like a second of not using it.

Imagine I'm a and I miss my stack, because I'm a noob, and the rest of the wave is at full hp. I want to make sure my Q ready when they get lower, without having to use the Q on a minion and potentially messing up the farming pattern.

Something similar could be said about others such as etc. where you miss the chance to use your auto enhancer, and you want to make sure you have it for the next trade, in case the enemy decides to engage on you again.

The only abuse case i can see is who can take towers faster by using this.

Thoughts?