Mumbai Airport layover

Hi, I’ve got an international flight arriving at 00:15 at Mumbai Airport Terminal 2. I’ve then got another international flight with another airline (self-transfer, not a connecting flight) at 04:30 am at Terminal 2. I’ve never been to Mumbai Airport before so I don’t know how slow the check in/immigration process is. Do you think this is enough time to exit immigration, collect my bag, go to departures, check my bag back in and get through security? Thanks in advance! (Please note I cannot change the flights to connecting. I am going on staff travel for some of the trip and the type of ticket I have does not permit a connecting flight)