For infant, just feed on demand. Sometimes my 2month old drink 30ml sometimes and goes to sleep, sometimes she drink 100ml. She poop alr, tummy area got space she also always ask for more. When 3 weeks old, around 30ml - 50ml was what my girl took in a feed. Observe a few days and you should be able to find your baby's feeding preference.
Yes you can feed. You can try 60ml first and adjust accordingly
Vanessa