Reformation is of nafs, by which bad morals are removed and good morals are developed and it becomes easy to follow sunnah. It is not necessary to do baiah but it is necessary to have reformative relation with any Shaikh who follows sunnah and Shariah. Then after complete satisfaction it is better and sunnah to do bai’ah.
Hence first you should establish reformative relation with him, listen to his speeches and whatever external and internal hindrance you face in following Shariah discuss it with him and get your reformation done and follow his advice and guidance.
When your inclination increases then request him for bai’ah. Also do istikharah before doing baiah. Purchase the book Talimuddin written by Hakimul Ummah Hadhrat Maulana Ashraf Ali Thanvi (رحمة الله عليه) from market and study it.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband