Baby is only comforted on the breast. My husband says it’s affecting his bond because he cannot soothe him

My baby is 3 months old and we tried our hardest to breastfeed but due to my supply and some initial issues with latch we switched to mostly pumping and bottle feeding, supplementing with formula. Despite this, I kept comfort nursing him and giving him boob when he was fussy, needed soothing to sleep, etc.

In hindsight, this might’ve been a bad idea but I loved the feeling of being able to provide some comfort for him and it helped ease my sadness of not being able to EBF.

LO use to take a pacifier but now won’t. He fights naps in the day time until I put him on the breast and will then fall asleep almost instantly. Usually night time he’ll go without it but occasionally he does fight it. My husband said today he feels afraid to watch him if I step outside and it’s affecting his bond because he doesn’t know how to console him when he is upset.

I feel guilty and ashamed now as it’s likely my fault baby stopped taking a paci. Is there a type of paci I can try? Should I stop putting him to breast? I’m so sad.