8 month old LO is quite strong and able to crawl quite well, how to prevent her from falling off the bed when she sleeps with us? (If she wakes up and we are still asleep)

Put a mattress on the floor, and put safety bed rails. Bed rails can be bought at takashimaya, kiddy palace, mothercare or any baby shops. Otherwise you can also try qoo10. The ones sold in qoo10 are alot higher (good if you have thick mattress) http://list.qoo10.sg/s/SAFETY-BED-RAIL?keyword=safety+bed+rail&keyword_auto_change=