Have you sorted out what you need to do to convert? It depends on your experience. It could be just as much as someone starting from scratch or as little as two exam papers and a check ride.
How many hours do you have:
1. In total?
2. On aircraft of more than 30 tonnes AUM?
3. As PIC of aircraft of more than 30 tonnes AUM?
4. As either P1 or P2 in aircraft certified with two pilots?