Thank you so much for your detailed reply! There are surely more people than just you and me who have difficulties with D-Lactate and they may profit from that as much as you and me.
If you find the time, maybe you could also post how you make the yoghurt with Jarrow's baby formula and how much of the other probiotics you usually use. I know that all these things usually need fine-tuning but knowing exactly how someone else does it gives a helpful starting point.
Thanks again for sharing your knowledge. You definitely did a great research job with this!