Hey there!
You probably could, but you would need to be enormously organized.
I started on my own project (in python) a few days ago, and am getting into the weeds of the documentation.  I'm at over 60 pages of just raw explanation and diagrams.
I saw your question, and out of pure curiosity decided to give it a try with vibe coding, and I can say - I'm kind of impressed.  After about 4 hours, with my documentation in hand - I was able to get:

• A working start menu
• The classic "mysterious person welcomes you" dialogue process
• Some enhanced character creation dialogue (not a shining force original, but I basically did a Ultima and made a Q-n-A for your stats.
• An opening overland scene where you can recruit your initial force
• A super basic force management menu
• Ability to read other characters' sheets
• a way to create triggers
• a start of combat
• basic movement cost calculation and menus
• AI will move enemies and react according to terrain conditions

Is it anywhere near a complete game? No.
And, I haven't integrated the sprites' animations yet, so every image is just static (this is an area I need to learn more).
But - it's kind of cool.  Yeah, it's a lot of time carefully articulating the components, but the reasoner made a lot of similar pattern and coding decisions that I would have, and was able to get me to a boiler plate setup VERY quickly (faster than me hand typing in folder and file creation.)

ohh yeah....
Cool time machine!

Just saying hello!