How do I manage my baby with congenital heart disease?

Hi doctor,

My baby's palms and soles of the hands and feet turn black when crying loudly and breathing heavily. The baby cannot drink milk for an extended period and is constantly sweating. Additionally, the infant wakes up unexpectedly from sleep due to breathing difficulties. The oxygen level is at 58 percent. An echocardiogram detected congenital heart disease, with findings including:

1. DORV (double outlet right ventricle) with TOF (tetralogy of Fallot) variety
2. A large malaligned VSD (ventricular septal defect) measuring 9 mm with a bidirectional shunt
3. Aortic override of 80 percent with aorta-mitral discontinuity
4. GDT (goal-directed therapy) of 65 mm Hg indicating severe infundibular and valvular pulmonary stenosis
5. MPA (main pulmonary artery) with confluent branch PA hypoplasia
6. A small 2.4 mm PDA (patent ductus arteriosus) with an L-R shunt
7. The infant was administered 10 mg of Propranolol, mixed 1 cc in 10 cc of water, three times a day, along with nasal drops for snoring. Good biventricular activity was noted in the right aortic arch.

What should be done next? Is it essential to place a PDA stent immediately? Can surgery be performed at this age?

Kindly suggest.