Yes- bt take on things as they learn them. but there are certain things that take a while to change over i.e. covering hair. its not something which someone can get used to overnight.
becoming a chozer betshuvah is a process not something which is all or nothing.
it is much easier for someone who is brought up with something as the only option to follow it then someone who knows the other side.
every bt follows a different path depending on where they are learning from. for example, it is very common for ppl to get invited out for a shabbas meal and learn from a family until slowly they get to a point of going to learn in a seminar/yeshivah to learn more.
there is a reason why chazal say that even complete tzadikim dont stand in the place of baley teshuvah because it much harder to start something after 20/30 years of doing it differently.