My 3 1/2 month old lo usually sleeps from about 8:30pm-6:30am. Recently, however, it appears that he has started cutting his first tooth. I thought it was way too early for this, but i took a peek in his mouth, and saw a tiny corner of one of his upper incisors sticking out. He has been fairly fussy lately, and the evenings are often a never-ending fuss-fest. The past 3 nights he has woken about 4am. The first 2 nights he was able to get back to sleep on his own, but last night NO WAY. Since it had been about 9 hrs since his last feed, I ended up feeding him when he woke last night...after checking his diaper, and giving him a little reassurance. I gave him a bottle, and a shot of infant Tylenol. I dont want these night-wakings to become an irreversible habit, but I know his mouth is hurting him. What might I do to avoid starting to create a bad habit???