hello you need to understand sims 4 how it works i need a small mod it uses xml and some lua let it controll your age of your sim or pet. remember you need a mod to control your pet.
1 freelancer is bidding on average $333 for this job
I'm a data scientist for a fortune 50 company, and do simulations for a living. Feel free to chat with me so that I understand more details. I am a bit pricey compared to others but guarantee your results.