I thought I would come back to this post and update it on how Lulu is doing with her new food. As I stated previously, she didn't do the slow transition because she would pick around her old food to eat the new food. Despite that, she did not experience any tummy upset and never had a loose stool!
She is now happily eating a mix of canned & kibble TOTW (High Prarie). I do have to chop up the kibble because they are too big for her to chew. She can chew them, but it takes her so long that she ends up eating only one or two at a time. So, I simply chop up some kibble and store in in a tupperware bowl. Then I mix some of the canned and kibble together twice a day (morning and night). I also leave some kibble out for her at all times and she eats that occassionally.
Thank you to all who took the time to recommend the different foods. I really appreciate all the information provided.
