Did I cause my baby's peanut allergy?

We just found out my 10 mo is allergic to peanuts. We "started" solids at 4 months because he was showing all signs of being ready and doc gave the green light. He wasn't truly interested in actually eating vs. playing with food until 6 months. I gave peanut butter early on, but wasn't very consistent maybe 1x/month until 9 months and then I started giving it at least 1x per week bc he started liking peanut butter toast.

Did I not give it frequently enough soon enough? No one in our family has a peanut allergy so it's not genetic.

For anyone that has a child with a peanut allergy, any tips or good insight to know? We received our test results back today, but have yet to talk to the doc. At the appt we got tested he said we will need an EpiPen if he is allergic. Of course I started Googling and now I'm spiraling 🙃