i’m feeling so mean it’s breaking my heart 😭

we’re a bit late to the party with potty training and i’ll admit it has been frustrating me a little bit because i don’t want any of the other children to say anything to him about still wearing nappies and i don’t want him feeling embarrassed but the past few days he’s been amazing and we’ve only had tiny accidents. until today when he wet himself 3 times at nursery and then when i picked him up. when he got home he told me he needed to poo so i said where do you want to do it and he said on the toilet, so i sat him on there and said i needed to just nip upstairs for a wee bit when i came back down he’d come off so i said come on i know you need a poop cos you’ve not been for a couple of days…and sat him back on and he burst out crying (i was holding him on a little bit) and was trying to get off. i just feel a bit lost with it all. he sat there crying his eyes out saying ‘i want my mummy’ 😭🥺 i just feel so mean to have tried to force him to do something he’s obviously so scared of. i said sorry after and i said i wasn’t sure what to do, mummy thought she was helping etc and we did hug it out but i just feel really guilty 😣