Jessica, Joy is right, your little one will accept the promotion! I had a . . shall we say "structural repair" (wrong forum for gynae issues!) . . when my youngest was 2. I wasn't allowed to lift him, push his buggy or drive for a month. However, without any help I had to get his 4 year old brother to school with the 2 year old walking alongside!! I developed great powers of persuasion and distraction!! I was very afraid of a "sit down strike" in the middle of the road, because I wouldn't have been able to do other than lie down with him! However, things went OK. We allowed extra time for everything, walked slowly and kept him distracted by spotting colours and numbers on houses or cars etc. I made games by deliberately saying the wrong colour and so on.
I bet he could get in his car seat, especially if you hand him a little treat for being a "big boy" (if needed). You could hold his hand for him to get up and down things, but be wary of holding both hands as he may suddenly stop supporting himself leaving you with all his weight. Bathtime may be tricky, but if you have a walk in shower he might like doing that instead, on the days when there isn't a helping hand around.
The downside for me was that my 2 year old considered himself promoted and he never ever got in his buggy again!! I never carried him again after that either (to protect the repairs I had), but that doesn't mean he didn't get lots of cuddles!
New stuff: GERD. Interstitial Cystitis
Lifelong stuff: Food allergies, eczema, asthma