That is definitely a Crassula ovata. It looks like it may need more light and sometimes the leaves will grow larger than normal. Mine spends summer outside and some leaves are almost 3 inches long. Do you have it in a good succulent soil? Also it looks like from picture maybe you could trim some bottom growth. They do take some time for stems to harden so using the support is ok to help train it. Mine is over 15 years old and have trained it to look like bonsai. Use soak and dry method for watering and avoid fertilize for a while.
