New apartment

Me and my bf lease is ending march 18th 2025 and we are wanting to move to cheaper apartments here in town but our current apartments sent us a letter letting us know that we need to notify them before January 30th 2025 if we will be leaving or staying.

I have emailed the other apartments about how holding a unit would work and this is what they have said

“If you have an approved application, it is good for up to 90 days. If you put down a deposit, and the property is ready for move in, we only hold properties for a week. So, if you put down a deposit, you would have to set a move in date within a week of putting it down”

Should I give the apartments our application early January or just let our current apartments know we will be leaving. This moving to new apartment thing is alittle confusing to me especially since I have to give our current apartments 60 day notice 😐