Keep it simple. Pronounce "Wednesday" as a combination of the two single-syllable words "when's + day."
That 'd' comes from when the day was known as "Woden's Day" back in the days of old English. Though it hasn't been pronounced like that since the 15th century, the spelling stuck, confusing English language learners around the world. Even Shakespeare was powerless in trying to get rid of that useless 'd.'