I had a similar problem this morning after a 35 minute WBTB.
Usually I try to avoid becoming too aroused (especially mentally) by trying not to concentrate on anything. (I try to avoid too much activity and bright lights, etc.)
If I worry about going to sleep then it seems to make it worse as I start to get the daily thoughts creeping in my head, etc. (I tend not to use MILD - not that I'm criticising it, as I rely on DILD personally.)
With me, a shorter WBTB time helps, but it is a fine balance.
Without knowing your routine it is hard to say in your case.

Good luck however.