I'm 36 weeks now. Is it normal to feel extremely tired to the extend that you'll rather choose to sleep than to do anything else? At the same time, appetite reduces too.

It is normal to feel tired at this stage as the hormone relaxin kicks in, it loosen your muscles and joints and causes your legs to feel weak. It's the body prepares itself for the birthing day. Take this time relax and enjoy the time before your baby arrives.