DS hasn't sat in the tub since he was about 18 months old. I just wash him standing up, and when it comes to hair time, I soap his head up, then he just "looks up at the ceiling" and I use a washcloth to rinse the soap out...just keep dipping and wiping (don't wring it out). It took me about a week to get him to understand the "look up at the ceiling" thing, and I say it just before every wipe, and he'll look up so the water doesn't drip into his eyes.
We have a removable shower head with hose, so we're startign to get him used to that, too...maybe yours would be OK with a little squirt?
I would just let him play and try to wipe down/scrub as much as you can. If he'll stand and play happily and let you wash that way, I'd just do it like that. Get some grippy stuff on the bathtub and you should be fine. I wouldn't force the issue of sitting; after all, you stand to take a shower, right?
We have a removable shower head with hose, so we're startign to get him used to that, too...maybe yours would be OK with a little squirt?
I would just let him play and try to wipe down/scrub as much as you can. If he'll stand and play happily and let you wash that way, I'd just do it like that. Get some grippy stuff on the bathtub and you should be fine. I wouldn't force the issue of sitting; after all, you stand to take a shower, right?