HyenaDev,
I think you did really well for your first visual novel. My only tip is that you can still get money and not be committed to finish the product. I don't support projects so they 'must' finish them. Only to 'encourage' them to make 'more' of it. People like me understand that not all stories complete. With Patreon you can take long breaks and just restart when you have the time and energy. No one sensible will be demanding a complete product.
Any way take as long as you need , and there is no pressure to return