Dianne,
I have had tons of trouble getting my lo to take a bottle and I've been trying since she was 2 weeks old (she's now 3 mos.). Just today I tried the Haberman for the first time, the first bottle took 40 minutes to give, but she did take the whole thing. I'll keep you posted as to how it goes. She's only been taking 2 oz. or less for my sitter at a time on the days I work, so this is my last resort. It is expensive, but if it works, I'd say it's worth every penny. I'll keep you posted and hopefully someone else has some input too!!