Bottle Reintroduction Baby 8 Months Old

Hi Mummies! I am currently fully breastfeeding my 8 month old baby. I've introduced a bottle before but stopped when he was about 2 months old once the dad started working. I'm a Stay at home mom. I want to introduce it back again so I can relax a little (someone can take over)🥲. Any advice? I bought Hegen and Avent Natural bottle. He would suck for a while then stop and kinda chew on it, then repeat. Is there anyone currently doing mix feeds? Are your babies taking it well? #adviceplease #FTM