Those versions exist, but the v1.2.1 mod is often considered the "golden build" because later official updates broke the mod menu functionality. Stick to 1.2.1 for stability.
: Sites like Softonic and Game Jolt list various versions of the game and its mods. Download Granny 3 Mod Menu Apk v1.2.1
The official game gives you 5 days. If you fail, you restart. The Mod Menu allows you to freeze the day counter or set it to Day 1 again after failing. Those versions exist, but the v1