The base game includes pregnancy now, which was added in v0.29.0, so there's no real need for this mod with the latest versions of Lab Rats 2. I would guess that's why this mod hasn't been updated recently, because there simply isn't a need for it anymore. As such this mod is probably not compatible anymore either, though of course you're free to try it and see. The fact that this mod hasn't been updated in a while would probably mean that you may well experience any number of potential issues and possible game crashes, but, as I've said, you can give it a try and see what happens. However, if it doesn't work and/or does cause issues, I'm not sure what the chances are of getting any sort of fixes because the creator of this mod seems to have ceased posting and/or visiting the site around mid-May 2020.