Hey. I’m in the exact same boat here. Iv tried size 2 teats and some feeds it’s okay like mid day ones but it seems to be to much for my wee one at bed or the few occasions she gets up in the night so Iv stopped using the 0, mostly use 1 and every so few bottles in the day with a 2 just to see how she gets on Hope this helps in any way 🖤
We use mam bottles /teats n it says on the packets size 2 is for 2 month plus. It depends how your child takes the sizes though, ours wasn't frustrated or taking too long, it just felt right to trial her at 2 months n we've had no issues with it
I changed my baby to size two at 8 weeks, if your baby is becoming frustrated during feeds or falling asleep while feeding it may mean they need the next size teat x