Soft spot sunken?

Gabby • 💖AJ; 10/24/18 💙JC; 05/24/13

My daughter is almost 3 months! She’s always fed, full, good body temp, and overall seems healthy and happy! But occasionally her soft spot will seem very sunken and others it is fine. I know everything says to go to the doctor immediately and I do plan on talking to her pediatrician but I just want to hear from other moms. Anyone else have kiddos with finicky soft spots?