Hi @del604,
It’s my understanding that he first journal of your day (every 24 hours) receives 10 seeds, and any journals after that receive 5 each until the journaling cap for the day is reached.
We recently posted a breakdown of seed earning here: Earn rewards with our Seed Bank Rewards Program! - and you can also find these details directly via your sofi app by heading to your seed back and selecting “how to earn seeds” 
