Hi and I'm so glad your little guy is doing better. Here is my experience, my little guy is almost 11mths, weighs about 3.7lbs, he had his surgery when he was about 7mths old and was beginning to mark quite often before it, well it took a good month for him to stop the marking and to loose his "affection" toward a certain micro pillow LOL. Are you peepee pad training? If so, I made sure that I put him on his pad about every 30 minutes so he would know to use it and recently I have begun to notice that he squats more than he lifts his little leg. Hope this helps some.
