TTC around sisters wedding

My sister just got engaged and is booking a venue for 12/5/20. I’m very close to her and matron off honor so I certainly want to be there her wedding day. I would be lying if I said it wasn’t a bit frustrating that now we have to think about TTC/due dates and her wedding date. My husband doesn’t want us to pauses few months TTC for this. I’m feeling very conflicted. I know it’d stress me out if my due date was super close to her wedding and thinking of the what if’s. I was on bed rest the last month when I was pregnant with my son. I told my husband I can’t imagine missing her wedding but I also really want a baby and don’t want to stop trying for a few months. If this were anyone else I wouldn’t care and I’d just keep trying by.

If you were in my shoes, would you try in December, hold off January though March and start trying again in April? Or would you keep TTC?

Has anyone been in a situation like this?

Thanks!!