The Prophet (peace be upon him) said, “Make things easy for the people, and do not make it difficult for them…”(Bukhari).
Once a non muslim came to the Prophet (peace be upon him) and said that he was willing to embrace Islam but he could only pray twice a day, instead of five. Our Prophet (peace be upon him) agreed and the man took shahadah. Once he was gone, his companions asked the Prophet (peace be upon him) why he allowed him so. He (peace be upon him) said once the man would enjoy the sweetness of prayer, he himself would willingly pray all five.
Often while trying to help people to come closer to Islam, especially new muslims or those who are trying to just take step through the door, we overwhelm them by introducing a bunch of instructions they might not be ready to undertake at that point of time. Our job is to help them do what they can and make things easy. As far as ensuring their guidance is concerned, Allah already made it clear that He provides guidance. He is Al-Hadi (The One Who Guides).
We just need to be companions. Often times we make Islam harder than it actually is, and portray Allah to be more strict than He really is.