I think some people just react differently to hearing their child cry. I’m your partner, if somethings making my son very upset I’m very reluctant to do it whereas my partner isn’t as affected by it, however when it comes to meds we’ve tried to do it in ways that cause less distress, we give medicine through his bottle teat and it’s worked alot better. My mum used to give us it with our milk but not sure if it’s recommended now x
Our LG doesn’t like it too and we’ve found the only 2 ways that seem to work is sat up watching Miss Rachel etc or whilst sat in the bath!
My niece was like that so in end they used put calpol in her drink without her knowing and they made sure she drank it. It work for them.