Getting toddler used to breastfed baby

I have a 2 year old and just had our second baby. I tried explaining to toddler before baby arrived about what breastfeeding was. That it’s how he ate. Showed him photos of him feeding etc. Now he’s here my toddler absolutely hates it every time baby eats. He keeps saying ‘get off please’ and ‘baby stop it’ I don’t know if he thinks he’s hurting me or something but he’s really taken to the baby other than that so I don’t want this to affect his relationship. Any tips or advice from anyone who’s been through similar?