Sir, on Sat 25th, try to get tickets for 12131 Dadar Shirdi Superfast, which leaves at 09 45pm from Dadar which reaches Shirdi by morning 03 51am.
For the return, take the 12132 Shirdi Dadar Superfast, which leaves at 10 25pm on Sunday from Shirdi and reaches on monday morning at 04 30am.
This is the most convenient and fast option. But the problem is of availability of tickets.