Girls, hello. Share, maybe someone has encountered it. The baby is 2.5…

Girls, hello. Share, maybe someone has encountered it. The baby is 2.5 months old and for the last 2-3 days he's not himself. He started being scared of everything. He lies in the crib sharply jerks, makes his arms wide and starts crying, bibs on shoes I also heard him scared, he hit the toy in the crib, the same reaction. His eyes open wide at the same time and immediately asks for comfort to calm down, so we sit with him all day. At home, nothing changed, there were no guests, everything was as usual. At 2 months old, they were all normal at the neurologist. And here such a thing... (I am worried)