Hi -
I can relate to your experiences above as I have recently gone through something similar with my 18 month old daughter.
When she hit a year, I thought the MD recommendation was to stop the bottle. However, my pediatrician, said that
was not the case & basically to wean her at our convenience.
It was more a case of how long do we, the parents, want to deal with the bottle, rather than a strict timeline to get her off the bottle.
That being said, I tried occasionally to introduce the sippy cup, but with lackluster results. I realized that I
needed to be more consistent & patient to get somewhere.
About 6 weeks ago or so, I came across a bunch of things on BPA, which I found terribly upsetting. I don't know why I wasn't better versed on the issue before, but I'm not superwoman. So, after berating myself, I made a very consistent effort daily to offer the cup & she got the hang of it after a few days. Now she's a pro.
At the same time, I trashed all of the Avent bottles, & bought two Born Free ones that I used occasionally.
she drinks mostly apple juice which I dilute a little b/c I don't want her to be all sugared up & occasionally I'm giving her just water which is going well.
The most difficult was getting her to drink milk out of the cup, b/c they associate milk with the bottle. But, after a few tries she sucked it down.
I think the bottles are now permanently retired, for now.
My daughter eats about 3 baby yogurts a day, so I know she's covered on the calcium.
Sounds like your kids are getting similar nutrition.
As far as the calcium question, I would talk to your pediatrician about that. Mine has said that they don't need the milk after a year.
Perhaps in small amounts, but my understanding is that it is not a necessary food group.
hope this helps.
SK