I believe Obst. Hummel commanded 353. ID, not 352. Erich-Otto Schmidt commanded 352. ID from 15-2-45 to 14-4-45 (Mehner, "Die Deutsche Wehrmacht").
Sources for Obst. Hummel being at 353. ID are NARA FMS manuscripts B-298. B-109 and B-097.
Where liberty dwells, there is my country.