Hi sweetie (((hugs))) You sound determined to get sorted so that's great! I'm so sorry your LO went through CIO, and pleased she seems ok now
As she is 14mo this belongs in toddler sleep so I expect a mod will be along soon to move it over
Ok so for her age group we tend to use 2 methods, gradual withdrawal or walk-in walk-out. My snap judgement would be that GW might be the way to start for you, but have a look into both (see threads on toddler sleep board) and see what you think.
My advice is: Set quite a strict routine in the sense of wake-ups, naps and bedtime, just so you can avoid her getting over-tired.
Personally I think tackle it all at once. You'll already be making a big change by ending the co-sleeping, I don't see the point in working really hard to tackle that yet carrying on the other props such as nightfeeds, you know? But it's totally up to you how much you want to tackle in one go of course. And start naps and nightimes at the same time, it will only confuse her if you AP her to sleep for a nap but expect her to go down independently at night.
You say you want to end the co-sleeping, do you want her in her own room?
So, in a nutshell GW involves putting her in her cot awake and stying with her til she falls asleep, giving her the comfort she needs (shhing, patting etc) but reducing that interaction, contact and proximity night by night until you get to the stage that you are sitting by her door and then eventually she doesn't need you in there anymore. There will be a lot of crying, that's unavoidable, but you will not leave her alone to cry. Does that make sense?
Let me know what you think and we can come up with a plan of action for you
I only started "sleep training" when my LO was 13mo too, I know the feeling. xxx