Keep df with skin to skin. Shirtless. To stimulate the familiarity of your skin & baby. Feed baby in dark room, without any interaction/ distraction of other people/ toys/ sound. You might be on the phase of ‘nursing strike’ so just keep offering your breast ya dear. You can search about nursing strike too. Pls Stick to 1 brand of teat.
To be honest, tomeee tippee/hegen and weird shape of test are not recommended as the design of the teats are too shallow for latching. High chances when bby feed on you, bby will not be getting the hindmulk and sooner or later will effect the development of baby’s teeth too bcs of the teat desugn. Just stick to pigeon/ pupici teats theyre good enough.
Hope these info helps and you can search on the nursing strike problems and recommended teats for bottle feeding. Thanks me later. Hope helps!