Talking with family about budget

Hi I’m relatively new to this wedding wire. My fiancée and I have been engaged since Christmas 2022 and we’re getting married October 2025. We’ve been planning for a few month now. My in laws have offered to help financially and I’ll be honest, my own family, what’s left of it, did not talk about money, like it almost taboo. My mom in law has offered to write us a check but I said I’d like to meet with her and my father in law and my fiancee to talk about the wedding. The wedding is more of a micro wedding, and about $15000. My mom can’t contribute anything financially, my fiancée and I can pay for the vast majority but my in laws paid a lot of my brother in laws wedding and they want to help by paying as much as his. They did not want a say in my brother in law’s wedding and they don’t want a say in ours. Even so, I’m still very anxious/nervous because of my own family attitude about money. Any suggestions or thoughts? Thank you!!