My friend's around 35 weeks pregnant. How many hours of sleep is essential for her? And how can she manage to sleep with the big belly as it's uncomfortable. Any suggestions?

I used this maternity pillow when I was pregnant and it helped. My sleep was not interrupted at all and I could sleep through the night all the way up till delivery. You could suggest to your friend to get this pillow and also drink some calming tea before she goes to bed.