Every baby is different, but I think CF helped us. My LO started life as a snacker, so I was worried that CF would reinforce the snacking tendencies. It really didn't.
We're on 3hr EASY starting as 7am or so. So, our CFs are at 4pm, 6pm and 8pm-ish (depends on our dinner, the winddown routine, how overtired our DD is, etc.) At first, she didn't take much - maybe an ounce or two, but after about a week she started to increase that amount as she got used to eating at that time. Now, if she happens to be sleeping she'll wake herself up for her CFs. We couldn't skip them if we wanted to!
The very first night that we did CF (even though she was only taking in a small amount), she slept from 8:30p to 1:30am - a 5 hour stretch. Since she had been waking every 3 hours, we eliminated the 10pm feed. (We don't DF.) Five hours of sleep seemed like eternity when compared to blocks of 3! Now, our DD is 6WO and she'll have her last CF bottle in the 8:00 hour, usually asleep by 9pm and she'll last until 2am. A couple of nights, she's slept until 5am (thanks Charlotte J for the swaddle technique that FINALLY contained by Houdini!).
It definitely seemed to work for us, but it is a lot of feeding during the busy evening hours. DD is our only child, so we don't have toddlers to look after as well, and my DH is super involved so that really helps.
Oh, forgot about the sleeping...we watch our DD. Sometimes she'll be fine for the 2 hours in between (usually between 4-6pm); then she'll sleep after her 6pm bottle and diaper change and we'll get her up for her bedtime routine somewhere in the 7:00 hour. Sometimes she'll sleep in between all of them if she's had a tough day.