Urgent Dilemma - help / thoughts?! 🥺

So it’s a very long story to make it short, we only had 6 months to plan the wedding, and now there’s less than 3 months left. It’s a destination wedding and we have sent out the invitations - we are expecting 50-60 people so far 40 have confirmed. Maybe only 20 have booked their flights. And the wedding planner I hired in November has not done one meeting with me until I got upset and realised I’ve been planning and organising vendors etc everything myself so I set up a meeting with her two days ago so also didn’t feel confident with less than 90 days till the wedding there is still much to sort out. I told her my budget initially already, there wasn’t transparency as she added costs to the spreadsheet that wasn’t there before so now the wedding is going to cost 15-20k more than we expected it to. We don’t know whether to cancel and do a registry locally then dinner or still go ahead? We are thinking about life after like marriage, housing and honeymoon etc. it’s not making much sense but some people have already booked their flights.
As people that have been married what would you do? We need to make a decision soon and fast - I’ve been praying about it and didn’t know there was a forum here so thought I’d ask for opinions openly.