Toddler talk

My son is 2 years old and he is just now in a toddler bed. He still has a binky and sippy cup to go to bed. I was wondering what it be bad if I were to help him break the binky by sleeping with him or would that start up another (bad habbit) he is attached to it. He uses for bed time and nap time only but when we is having a really hard day with teething he sometimes gets it in the day for a little while. Just wondering with me falling asleep with him would help or would that just he a bad idea and I should let him cry it out?