Any ideas?

Crawl on the floor with him! Literally crawl 😭 that’s how my little one started crawling at 5 months!

Also helping him get the motion down, get behind him and push his legs one by one almost like you’re doing bicycles

Mine neither.. He got evaluated for early intervention and qualified as a result. You can do the same to work with a physical therapist or just give it time. They say the more they spend on their bellies (90 mins a day) the more likely they are to crawl. But mine hated tummy time.

have you tried kneeling play? you can use a walker, thats what i think helped my son. i would also put him in crawling position and just have him rock back and forth!!

I would definitely get them evaluated , make sure everything is okay. Because the one thing with kids is you never know. I rather here everything is fine than I wish you brought them in sooner

I also got mine evaluated for early intervention and he qualified now with physical therapy he is thriving and meeting his milestones. Tips I got from therapy you can use your body as a surface to help them explore and transition if they’re not comfortable on the floor but definitely playing on the floor with them helps my baby didn’t like tummy time unless he could see us