Do not hold the mouse button down continuously. Tap it rhythmically. Think of it like tickling with a feather—short bursts allow the Wake-Up Meter to decay slightly between clicks. Holding the button down usually causes the meter to rise exponentially.
The primary loop involves managing your time and your sister's sleep cycle to maximize opportunities for interaction. night attack on little sis walkthrough
Use items like the sleeping draught and keep your movement speed low. Do not hold the mouse button down continuously