A: Your issue is a complicated issue because it involves visitation/custody by two third-party persons who are not biological parents. For your question to be properly answered, you will need to meet with a family law attorney who will interview you at length to become aware of all of the facts of your matter, and then advise you accordingly.
A: A pendente lite order is a temporary order that, generally, remains in effect until the actual trial. I suspect that you have an actual trial scheduled for June. If you feel that there is a sufficient reason for the court to reconsider the issue of custody after the pendente lite order but before the actual trial, you can perhaps file a motion asking the court to reconsider the issue of custody before the date of the actual trial.