One small thing to try is so-called Asian squats while you're playing with your kid.

Hip and groin neuralgia started suspiciously soon after my tirzepatide weight loss. I seem to have gotten it under control after mobility exercises centered around squatting. It took almost six months to get from falling backwards to being able to squat flat-footed. Now it's a comfortable and useful stance.

My theory is the weight loss shifted my center of gravity, calling on muscles and joints that weren't ready for the load. Learning to squat helped the new version of my body relearn how to support itself.