How soon after an apicoectomy can a crown be replaced?

I had an apicoectomy around 6 weeks ago on my 3rd from back tooth. The tooth feels a lot better just slight gum tenderness/numbness where their is scar tissue. The first few weeks my tooth and/or crown seemed loose. The crown now sits lower than the rest of my teeth. It doesn't feel comfortable when I chew. My dentist had said he would replace the crown in 6 months but would it be possible to have something done before then? Or could it affect the success of the apicoectomy?