in first week of birth was related to hypoglycemia
, second episode seems to be unrelated to sugar level. I am sure doctor must have checked up sugar level during second episode.
is not a specific finding for any disease. Possible explanations are (i) due to episode of prolonged hypoglycemia or hypoxia
during first seizure, (ii) any disease like metabolic disorder is there and your doctor will investigate for it, or (iii) it may be normal and only follow up will confirm. Your doctor might consider for an EEG and anti-epileptic drug for the baby.
Wish all the best