Q. Re- question 2401. Regarding geirim having ruach hakodesh (like parents) when choosing their name. That Horav Shlomo Miller’s Shlit’a opinion is that it stands to reason that if a ger has the right kavana and intention when choosing the new name, after praying truly and sincerely for Hashem’s help and consulting with his Rabbi, mentor and family, Siata Dishmaya or heavenly help will be granted to choose properly.
Can a convert after accepting and using his given name that he suggested at the tevila ceremony, change it if he changed his mind and doesn’t like it now?

A.  Horav Shlomo Miller’s Shlit’a opinion is that he should try to keep the name he chose at the end of the geirus act, if the name was chosen properly after praying truly and sincerely for Hashem’s help and consulting with his Rabbi, mentor and family. Since then Siata Dishmaya or heavenly help, akin to Ruach hakodesh is granted to choose properly. Especially if the name has already been used officially, as in the geirus certificate or (if married) in the kessuva written after the geirus.”

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a.