When I was pregnant with No 1, my appt with her was about 5 mins including scan. If I have any doubts, I will raise my questions to her. Most of the time, I just do my own research on the internet. Frankly, it's easier doing a google than getting her to answer anything once a month.
I delivered at East Shore and to me, that's an excellent hospital to deliver in. If you decided to stick to Dr Heng, then let me prepare you...
Don't expect her to be around through out the hours you are in labour. She has many patients delivering on the same day most of the time. I only saw her when I was close to delivering. She came in with a chocolate in her mouth, checked my cervix and said "How come you still haven't dilate fully? I go finish my chocolate first."
To some people, they may not be able to bear with such an attitude. But to me and my hubby, we knew that the labour was going on well, and there's no need for concern. In fact, my hubby said she is the most confident dr he has ever seen. He felt safe putting me in her hands.
Also, the midwives are not around most of the time. They will only come in to check on you once a while to see how the dilation is going.
Back to ESH, it's a very nice hospital. The nurses are great, the lactation nurse is even better. You can call her up after you discharge if you have any prob with breastfeeding. She is pro breastfeeding but if you need to formula feed your child, she's totally ok too.
The food in ESH was great and I heard it still is. They are generous with snacks and drinks. If you need any drink in the middle of the night, they will give you hot milo with crackers. If you are not able to take care of the newborn, the nurses there will handle the newborn for you.
Basically if I'm not staying in Perth now, I will choose Dr Heng and ESH anytime to deliver my No 2. In fact, when I went back for holiday a few mths back, I took train all the way from Woodlands to Bedok just to see her for scan.