Tandem feeding

Mimi

Hello ladies, I just found out today that I’m pregnant with my third baby, I’m 8 months pp and still breastfeeding, my baby doesn’t accept the bottle at all and all she want is my breast, how does tandem feeding works, does it effect the fetus in anyway? I’m already exhausted and nauseous, I wish she would accept the bottle..

any tips and advices?

Thank you