Mine is not diabetic neuropathy but plain ol' large fiber neuropathy. But I, too, have leg weakness, and mine, too, varies by the hour and often the day. I've tried tracking when my legs feel weak vs. when they feel fine. I've yet to come up with a definitive answer – other than to say that toward evening (makes some sense, as I've been up and around all day) and sometimes, too, in the morning if it's a morning following a substantial workout with my home-health therapist (that also makes some sense). Still, sometimes my legs 'surprise' me: they'll feel strong in the evening or the mornings following the previous day's workout. 'Tis a puzzle. –Ray (@ray666)