I think I get why you're confused because "wendsday" could be just another way to spell "wensday".
I think OP was going for a slight pause between the two syllables, like "wend-s-day", or something like that, which could be three syllables if you really take your time with it 😄
Ah, I get what you mean now. I saw "wendsday" and read it as two syllables, basically the same as "wensday".
I think OP may have been going for a brief s sound between the two syllables - "wend-s-day", which could be three syllables if you take your time with it 😄