My son is 6 years old. His bottom 2 incisors has been shaking for 2 months now, but its still pretty tight and he experiences pain only when he bites hard with it. Now his permanent teeth has already started coming behind it in a crooked way. Its not very close to the milk teeth its a little inside and is not even parallel, it is sort of inclined to 45 degrees. Should we go ahead and remove his milk teeth now itself? My major concern is the alignment of the permanent teeth. Will it adjust to position later?. I want to mention he had his first teeth only at 15months. Any advice will be really appreciated. Thanks.