Hi all!
A short background info: we cut dairy from DS2's diet about 5 months ago. Since then I could reintroduce dairy products, like yogurt, butter, sour cream, he's fine with all those and tolerates even baked dairy. I trialled cow's milk in August for a week, but he went back to multiple NWs, so I stopped and sleep is OK again.
My question is - do you think it's worth trialling cow's milk from time to time? I'm giving him HAF right now, but TBH it's quite pricey, so it'd be great if he just outgrew this intolerance!

And if he doesn't outgrow it, how long should I be giving him HAF? 2 yo?
Other types of milk, like soy and rice is even more pricey than HAF here, that's why we haven't changed it.
TIA for all the advice!