Is 20 days too long to wait to meet if you’re talking to someone on tinder?

Started talking to this guy like 20 days ago and he said he moves slow. He also hasn’t slept with anyone in over a decade. He gets axiety when talking on the phone and needs me to text him to warn before calling. Are these red flags for me to move on?
Answers

Dave

LOL, if you need to ask, you shouldn't be on tinder.

real estate guy

Yea, a LOT OF RED FLAGS! It sounds like a classic scam where they bait you and then ask you for money. Or he could be catfishing you. Text you before calling? Really????? Sounds like he is cheating on his wife. Why don't you call him with a blocked number and see what happens.