If he’s okay with tommie tippie then just stick to it. Increase the bottle feeding as much as possible before u go back to work. So your LO can get used to bottle. Try direct latch only at night.
Last time my baby will reject the bottle straight away when i use tommee tippee i feel he’s having a hard time to suck. But when i change to pigeon & medela bottle he was ok. 😊
But every baby is different.. so you have to do trial & error. No choice on this one. don’t be so stress, you’ll eventually learn what your LO wants. Enjoy the journey 🙂
Kate