Please refer below link and do the steps to your mouse to prevent from waking up your laptop from sleep.
Note : you might find 2 mouse's listed on the system one for Laptop touchpad and other one Bluetooth mouse so please do below steps for Both mouse's.
There is not any "Allow this device to wake the computer" in my properties tabs. Also, the BIOS has nothing for USB Wake Support or ACPI Suspend that would help solve this issue. What to do?