Won’t be the babies playing up, typical bloke not fully understanding. 😂 Maybe the flow isn’t strong enough for them. I’ll be using MAM bottles again as they are great, my son needed more flow because he was a big boy and the size 2 teat was too much flow so I used the size one teat and then I poked a tiny little hole with a pin through it and that gave it a perfect flow Size 0 wasn’t enough for him either as above doesn’t suit all babies, you just need to try a different size and see what fits x
Our LO is a week old and We started with mam bottles 0 teet, but he wasn't feeding well. We noticed that he fed much better with the hospitals disposable ones, so we bought the nuk first choice bottles which have a much faster flow. But now we're using the mam again as well as tommee tippee anti colic closer to nature and the nuk ones. He favours the mam 0 teets tho. He has about 1oz every 2ish hours and feeding can take up to an hour just for that amount. We give regular breaks for winding and we also wake him up if he hasn't naturally awoken for a feed. Smaller babies take longer and need more breaks. They also fall asleep more whilst feeding. But you have to have patience and wake them up so they don't soothe on the bottle, rather than drink. They're not "acting up" they're learning. Babies have never fed before, so it's a learning experience for parents and babies alike.
I don't think a week old baby would be playing up, they probably don't know how too. It sounds like the teat is not right. Do you have a size 0 as that doesn't suit all newborns. Personally I prefer mam bottles. My first born worked well with it straight away. But if you want to stick to tommee tippee bottles then just experiment and try different teat sizes. If is still don't work then it's likely the bottles isnt suitable