Nipple flow size - Help

Kathy • 30 - FTM - Vaeda Miribelle born 10/24/18

So baby was on ComoTomo bottles w/slow flow nipple up until the 4month mark a few days ago.

She was taking an hour to eat 4-5oz & getting frustrated and taking several breaks with her pacifier. It was frustrating for all parties. So we switched to the medium flows a couple days ago. Now she guzzles 5oz in 10 minutes and that’s with me making her stop every 10 seconds or so to breathe. She’s clicking again (previous corrected tongue tie) because she’s sucking like it’s still the slow flow, will sometimes choke and She now will spit up several times after bottle all over herself and me.

I’m kind of at a loss since there’s nothing in between the slow and medium flows. Idk if I switched too soon or if it’s a waiting game on her relearning how to drink with a different flow.

I’m also struggling with her sleep so someone just come take care of us. Hahaha