Ay, mama, that's such a tough journey, sending you strength. Please talk to your baby's doctors and the NICU team directly about what tests they're doing; they know your little one's situation best and can explain everything step by step kaya wag mag-atubili magask ng questions.
A few of us mums with NICU babies found it really helpful to keep a notebook of what the doctors say, and to request a family meeting with the whole team kung may gusto pang malaman. Your baby is getting the best care, at nandito lang kami if you need to vent or share updates. Praying for your baby's quick recovery!