That's the position my partner and I are in, ready to exchange and changing jobs midway through isn't ideal. So although I want to start yesterday it's probably best it's in Sept now. I'm in a pretty secure industry job anyway so no big rush
I know what you mean starting to think its a good job I have not started now feels like a lot is going on right at this moment and if the start date is in September gives us chance to settle in and be able to focus more on the role