Marriage rules

Hello! My fiancé and I are considering converting to Catholicism. We are both Methodists currently and are getting married under a Methodist pastor. We hadn’t seriously talked about converting (comments here or there but both thought we were thinking about converting on our own until we realized we were both seriously considering it) so we have everything for the wedding planned already. We will be getting married in the middle of May so not enough time to go through the necessary processes to fully convert and change directions with who is marrying us.

Will our marriage be considered valid under the catholic faith or is there something we would need to do once we convert after we’re married? If anyone could provide any insight on this I would greatly appreciate it! Thank you 😊