I have studied your case.
Yes if you stay off tobacco healing will be faster.
is going in delayed union ,so you may need to further investigate and augment healing process.
You may need X ray tibia.
If bone healing
has stopped then bone grafting
may be required.Physiotherapy
like matrix therapy may help in union.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
Wishing you good health.