I will state right now that this is probably NOT the response you are looking for, but nonetheless, here it is....
My daughter has also been a catnapper since 2months and she still is at TEN months. If I didnt know better, I would have thought that I, myself, wrote your story. Over the months, we tried EVERYTHING and when NOTHING worked, we cycled through and retried. We have worked with a pediatric sleep specialist who thought that her terrible napping was due to her poor nighttime sleep (the only place your story and mine differ). Once my daughter started sleeping through the night with no wakings, the specialist assumed good naps would follow. Well, my little strong-willed baby decided to prove her wrong! During this stressful experience, I read more sleep help books, research articles, blog posts, magazines, and more than I care to admit. All it did was stress me out and make me feel like I was doing something outlandish as a new mommy and couldnt understand WHY it was happening. Well, I still dont understand why and have JUST recently come to terms with it. Perhaps later down the road, she will have affects from lack of sleep, but at this point I know that I hqve reached out to others and have done everything that I can as her mommy. I just try to take advantage of the extra awake time
And to tip it all off, this week has been a BIG challang, as she has been REFUSING her 2nd nap (now only taking 1 30min nap each day). All I can do is offer her the second one when she is showing her tired signs, but I cant force her to sleep
Good luck and hang in there. I hope that you cam find some inner peace......it took me 9full months to find mine!