My 2 weeks old baby didn't wake up for his feed. Last feed was about 7 hours ago. Should I wake him up or should I let him sleep?

You should wake him up regularly every 2-3 hours. Some babies tend to sleep through their sleeping times and they become dehydrated - especially babies with jaundice. They'll be more drowsy and sleep for long hours. They need to be fed regularly. So do wake him up every 2-3 hours to just feed him.