I see you already have a lot of answers , I am sure there are some excellent suggestions in amongst them.
I have not read them mainly because I am an opinionated old lady. Mother of seven, grandmother of 14 and great grammie of one.
I could spit nails every time I see someone say take the bottle away before two years.
TWO is the weaning year....has been for fifteen thousand years.
Out of the seven of my children, I had one who came home from kindergarten for his bottle of orange juice..and there was another little boy in his class who still had his bottle of milk after school. This is one extreme. Mine was done with it by Christmas on his own violition. His classmate gave it up the next summer at six. Never saw a ten year old suck a bottle either. I had a little girl who stopped breast and bottle before she was two. Again , on her own.
The rest stopped nursing when they were ready to give up the comfort of sucking at various ages, most between two and three years of age.
An infant derives much comfort and nurture from nursing, wether it is a bottle or breast. I breast fed all of mine , at age of one to fifteen months they accepted a bottle. I held them at first then that little streak of independence appeared and off they ran with their bottles.
Dont recall any problems with switching to bottles (or not), or for them to stop nursing altogether when they were ready.
Personally I think it creates anxiety and despair to take away the nursing thing too early. Remember, it is NOT just the breast milk, or whatever you choose to put into a bottle.
It is the sucking, the nursing, the closeness to Mother that is important here. A sense of security to them.
This can be a big scarey world to a very small child. Or a small one with Mum and Dad which is safe and fulfilling.
I believe many parents today are pushing babies into childhood, and children into pubescence , and teens into adulthood way before they are psychologically ready for these transitions.
And I think it makes for an unsettled baby to take away the props that give them a sense of security which is the basis for them challenging new experiences.
It is a good thing to finish one thing in its proper order before moving on to the next stage.
Let the babies be babies until they are prepared to be children and that happens around two years old. Some bit earlier, some a bit later. But tincture of time here.
What does it harm if your baby wants her naptime/ bedtime bottle? It is not that much work to pour milk or whatever into a bottle is it? Or not that much work to wash out a bottle.
WAY too many books that are most misguiding today I think.
Dr. Spock ruined an entire generation and did a pretty good job on the following one as well.
You will do as your heart leads you and as you think best...this is as it should be.
But you have asked for opinions and advice and this is mine.
Give the baby her bottle until she does not need the comfort she derives from it any longer.
PS Did mean to mention that if one of my children took a bottle to bed, some did, some did not...not one of them suffered any teeth problems because of it. NOT ONE. They are now, of course adults, all but one have their own teeth in excellent condition. The one had serious side effects from meds she was on that damaged her teeth beyond repair, in her forties.