Hello @Chortlepuss and welcome It totally varies on waiting and responses and timeliness when applying for sits.
Apply for multi sits all the time, it’s like looking for a job. You don’t know which one you’ll get, if they like you, how good they are at replying and so on.
Here’s a a thread to help and if you use the spyglass at the top of the forum there are loads more
It totally varies on waiting and responses and timeliness when applying for sits.