Don’t stress too much about comparing. I’ve seen twins who were vastly different. I worry about my 2yo too but remember they can learn so much even in a day. As long as most milestones are met and doctors aren’t worried then u shouldn’t be either.
My son is 29 months. Hes starting to use his imagination a lot. He can do a lot himself now ie dressing. Loves to help and clean. Sometimes is picky and has an attitude. Loves to give hugs. Is amazing with tools and puzzles and art. Not a great talker but is getting there! Knows how to use the potty but won’t yet.