I want to try baby led weaning for my 6 month old son but am afraid he might choke on his food. Any advice from mummies who've tried this with their LOs?

I was facing the fear like you initially. What I did was watching youtube videos on BLW so to prepare myself on what to expect during the BLW (gagging, choking, coughing etc.). Thus, I more or less understand under which situation I should intervene baby. Also, do watch videos on how to manage baby's choking and if possible try to attend local first-aid course such as http://sera.sg/e/index.php/infant-and-children-basic-first-aid-and-cpr/