How to know what adjustments to make during mat pilates classes?

I really love my mat pilates studio. I attend classes about 3x a week and it’s all on a yoga mat with props like blocks, stretchy bands, balls, weights (usually 3/5/8 lbs), and rings.

The owner of the studio is really great at cues for pregnant women but she just went on maternity leave herself. Such horrible timing for me since I’m about 9 weeks and wondering when I’ll have to start making changes. I don’t really know where to start other than only doing what feels good of course. But historically I’m the type of person to push myself and I’m worried I’ll be doing moves that aren’t good for my body as I approach my second trimester.

Does anyone have any good resources for knowing how to make adjustments during pilates or strength training workouts??