Switch off breastmilk or formula before 12 months?

I am struggling with breastfeeding. Really hating it lately and my supply is struggling as well. My lo has a dairy allergy and hates the hypoallergenic formula. Even if it’s 2oz formula 6oz breastmilk. He is almost 10mo and still wakes 1/2 a night to eat and eats at least 6x a day. Not sure if he eats so much still because he’s not getting enough or staying full long enough. 🤷🏼‍♀️

I was wondering if anyone has started their kid on milk before one? He would have to have almond milk or was thinking pea protein milk?

Any advice?