I doubt it. There is a reason that this is the first time ever a Team Eagle fighter will move up in weight. They kill themselves to make 155 for good reason, unfortunately weight cutting is probably 20% of the sport.
I feel like they, just like Belal, are severely underestimating JDM and think "It's an australian, we'll hold him down they have no wrestling."
My best guess is that the plan is beat jack and retire, but I hope Jack throws a wrench in the spanner just to shake things up at the very least.
However, there were several times where JDM in the scramble to get up against Belal would have been open to a d'arce, which Islam has shown a fancy to especially recently.
The last time Islam fought someone with a full camp, it was a shopworn Dustin who took Islam to the limits. JDM is larger, 5 years younger than Makachev, hungrier.
The first thing he heard as a champion was the lightweight below him saying "Keep my belt warm."
That, if I was Jack, would be ringing in my mind for the next 6 months or however long and I would think about hurting Islam every single time it crossed my mind.