LO refuses bottle from me

Ti

So these last days my LO has been refusing bottles from me. He cries and cries until I hold him, pat his back, walk around with him. It takes me at least 40min to get him to want to feed. Yesterday he was drinking well with his grandad until I walked in and he started crying. He is strictly formula fed so that can not be it. He does have rsv, is exactly 4m (so perhaps a leap) and just started a sleep regression. Does anyone else have this? I am at a loss here as it takes me so long to feed while someone else feeds him so much faster. Is this normal? Is there anything I can do about it? The last feeding I just let him cry it out while my heart was breaking and he just fell asleep from being so upset. I dont know what to do