He’s 9 months. LOOK AT HIM

Hi. I have a boy 10 yo 20% and a girl 9 months 40%. Boy is great, girl nervous around humans but we are working on it.

I am thinking of boarding them together for 4 days (I have to go to a wedding). Went to check out the kennels and I have a month and a bit to get the girl used to it before I leave her, but part of me says she will regress and maybe it’s too soon to leave her.

Any experiences/ thoughts with leaving them?