hey mama's !!!!

hey mama's I'm currently still ebf and there is sometimes where I just need to leave to do errands and hard to bring my little one with me. I've tried introducing bottles but I'm having no luck and it can be stressful . my baby was taking Dr Brown bottles when I was pumping because I couldn't bf for a reason and now that we got it cleared up I tried a nipple shield and my babe loves it and that is the only way I can bf because of tongue tie and my nipples are inverted. so my babe hates bottles just chews on the nipple or gags . I've tried Pacis too and it's the same. the bottles I've used already are Dr Brown, Tommie tippiee , avent , medela calma , evenflo bottles, any help??!