Best bottle for breastfed baby?

I have to start supplementing with formula as my supply is drying up. I have done everything that I can while pregnant to boost it but I'm hardly producing anything. I feel like I have failed and have been struggling for a while with this. My son is 9 months and has refused tomme tippe bottles and only only took spectra bottles that came with my pump when I gave him a bottle of breastmilk. What bottles do your breastfed babies take that I can try with my son?