Unfortunately momma has lost 3 pups. All females. She’s doing her damndest, but she’s got a few bad tits and I guess there just wasn’t enough to go around.
Hey Slim I ran into this exact issue too when I bred my very best bitch who was 7 years old last year. She delivered 7 and we had to give her a shot to induce labor to get the last 3 out (still born). She only had 4 or 5 good tits, and so she picked two she didn't want and moved them out on her own. Pretty crazy that she knew, we ended up losing her due to a uterine infection but I was able to save and raise all 5 pups.
Best of luck to you with the pups, they sure look nice. I've been following along with your dogs progression and it's been fun to see. Stay after it!