Baby boy update!!

So Jax and I are home, my boyfriend had been a big help and we’re doing great, but since jax was born 5 weeks early at 5 pounds 4 ounces and had a loss of oxygen they (the doctors) said that he could possibly have a little brain damage and they said he could start to have seizures but will only have a possibility of them for the first month of his life and since he’s so little they said if not treated within the first 20 minutes he could die.

how do I know if he has/ or is having a seizure?

Any tips?