Help! We need a toilet to help with my special needs's son's BMs

[ClassicTaste]

Please help us! My son is special needs, and his medications cause him to pass very hard, very large bowels. Every single time he has a BM, he clogs the toilet, badly. We have even bought our own snake device because we have become tired of paying the (almost daily) plumber bills. We had American standard toilets, but got them all replaced in favor of Toto Dartmouth models because we were told they were "the best." Now he is 13, and the situation is worsening all the time. Plus, it's now effecting his self esteem, since it's a daily occurence and he's becoming a teenager. Suggestions, please? Thanks.

 

[Smooky]

Here is a similar thread. See if it helps:
https://terrylove.com/forums/index.php?threads/best-toilet-for-large-bms.60540/