2 kids under 2 yrs old

My baby is now 11 months old and I am currently pregnant about 2 months. My first checkup is this coming Monday. By calculation, I will have an infant and a toddler of about 18 months old next year. So that makes 2 kids under the age of 2. I am super nervous about this. 😂 Anybody here has experience with this situation and has any tips? I dont wanna overthink and make myself worry over nothing. Just cant shake that nervous feeling away. Haha.