It may help to listen to what's going on, not in classical 'solfège' terms, but more akin to a verbal conversation, maybe in a language you're unfamiliar with. Listen to the 'chatter', rather than the 'beat', and try to 'speak' the same language. An example..? I'll try, but ...
Imagine a conversation such as "I'm going to the wedding tomorrow, but don't have any idea is to what I should be wearing. Any idea..? It may be too late to get a peremptory fitting at the local tailors, so I'm in a bit of a quandary..."
There's no set pattern to the above, and only an inkling of tempo, so to play along, one would just have to try to use a similar 'flow', and when it matches, all will be well. It's not necessary to be the same, or even similar 'patter'; in a conversation, some folks will be using simply interjections such as 'Oh yeah..?' or 'You don't say..!', and they'd be fitted in depending on the pauses or intonations of the others.
Just a thought; that's how I do 'odd' stuff, and learn complex patterns. I equate them to phrases, or complete sentences of my own choosing, which becoming mnemonic.
Hope this helps; good luck with it all, and 'Well done..!' on getting the chance to play such stuff. My thumb is up.