My daughter, who was exclusively breastfed and refused bottles from 1 month old, switched to formula at 10 months

Hello. I'm Tamako.
I apologize for the long article title, but my daughter, who was exclusively breastfed from 1 month old, gradually started mixed feeding from 9 months, and I was able to switch her to formula exclusively at 10 months.

I searched the internet many times for ways to switch a baby who refused bottles and was exclusively breastfed to formula.
However, I couldn't find any good solutions, so
I am recording my child's case in this note. I hope it will be helpful to someone.

1 month old - Bottle refusal begins

After giving birth, my daughter drank milk from a bottle without any trouble at the maternity clinic.
I also wanted to do my best with breastfeeding as much as possible until she was about six months old, so even though I didn't have much milk, I tried to let her suckle every time I breastfed. As a result, my milk supply gradually increased.

The Gina Ford method recommends using a bottle for the last feed at 10:00 PM.
However, I didn't use a bottle for this 10:00 PM feed; I breastfed her directly. There are three reasons for this.
“Because I can't get enough milk even if I use a breast pump due to my constitution”
“Because if I didn't breastfeed for the last feed of the day, it seemed like my supply wouldn't increase”
“It's a hassle to wash bottles and make formula”
That's why.

Because of that, from about one month postpartum, I was exclusively breastfeeding throughout the day without using bottles or formula.
In the midst of this, when I had to leave her with my husband just before she turned two months old for a hospital visit, I discovered that she wouldn't drink at all when I used a bottle. This was the start of her bottle and formula refusal.

Around 6 months old - Started practicing drinking from a straw

I tried using a bottle occasionally, but it became a hassle as days went by where she wouldn't drink at all, and I would just throw away the contents and wash the bottle. So, around 6 months, I started practicing with a straw loosely.
I put barley tea in a Combi Rakumug that I had from my older child, and when I let her hold it while eating baby food, she was able to drink from the straw after a few days.

8-9 months old - Started practicing with formula

Although I had managed with breastfeeding until now,
as she grew, the amount she drank increased, and breastfeeding was no longer enough. (Even if I let her drink, it wasn't enough, but she wouldn't drink formula either.) Since she started eating three meals a day, I began to think it was time to stop breastfeeding.
First,to overcome the formula refusal, I decided to make 20-40ml of formula and try to let her drink it before every breastfeeding session.

The result... she wouldn't drink it (lol)

She wouldn't drink it at all, and I kept throwing away all the formula and washing the entire set of prepared bottles.
It was very troublesome to make formula and wash everything when I knew she wouldn't drink it.
But,without giving up for the time being, I continued to let her drink formula before breastfeeding.

10 months old - Finally drank formula and quickly graduated from breastfeeding

Around this time,since she had gotten used to the straw mug with barley tea, I tried putting formula in the mug and letting her hold it.Even then, she didn't drink it at first, perhaps because she didn't like the taste, butone day she suddenly started drinking it!!

For the straw mug, I initially used Richell, but when I switched to Combi, she started drinking from it.
I remember my older child also loved using the Combi straw mug, so it seems Combi was a good fit for my children.

After that - Graduated from formula too. Switched to cow's milk

After she turned 1 year and 1 month old, I switched the formula I was giving her twice a day—at 2:30 PM for a snack and before bedtime—to cow's milk, and finally graduated from formula as well.
I started getting her used to cow's milk little by little with a lidded cup after she turned 1.
At first, she would spit it out, but once she got used to it and was able to drink it, I switched to cow's milk.