Poop questions

Hello all!

My son is 7months old and for the last week he’s been having issues with pooping. He’s been straining more than usual and there haven’t been any major changes to his diet. He’s on Enfamil AR formula, eats the pureed fruits & veggies from gerber and occasionally I will make him baby cereal from gerber. He does drink diluted apple and pear juice. On average he’s taking 3 days between BMs. The last time he pooped before today was on Friday and today’s BM concerned me slightly. I will post photos here for reference. I’m wondering if it is getting worse or better. I’ve tried prune juice, pureed prunes, baby windi, belly massages & bicycling his legs. Should I go to the doctor maybe? I know Enfamil AR has rice in it so maybe switch formulas? Thank you in advance for any advice!

First poop after realizing he’s constipated.

This is after bicycling his legs after the first picture.

This is on Friday and the last poop before today.

Poop from today. It was pebble like but turned soft.