A Big Congrats FG on the 5 1/2 months you did BF!!
Try not to be too hard on yourself YOU did a great job in getting your little man to this point
As for the worry of thinking at what other people will think...at the end of the day does it really matter what anyone else thinks. You need to do what is BEST for your little man!! ...and if that is FF the main thing is that he is healthy and eating no matter how he gets his milk.

Try and celebrate that you DID BF no matter for how long and you should be very proud of yourself.

Another BIG cyber