Your flight lands at 00:25 and the earlier flight takes off at 2:40, which gives enough time to make a connection in DXB, as long as there is no big delay.

You better give a call to Emirates office in UK and ask for possibility of a schedule change. You can do the schedule changes only on phone, not thru the website.

Even at the check in, if there is no delay, you can ask the attandant or the emirates office in the airport to reschedule the flight, as long as the seats are available and there is no fare difference.

But better give them a call in advance as the layover is too long unnecessarily.

Service desk phone no is
+44 844 800 2777

Have a safe flight.