HI there, what is his mobility like? I know Finn was really frustrated around that age because he was pretty immobile but wanted to be mobile. I do think that teething is likely playing a part there.
And yes the whole 'daddy is the most exciting part of my day' thing really is hard, but it's because he's new and coming in the door and you are old news. It's the special relationship mums have with their LO's...not that mums can't be fun but we are typically the caretakers, especially when we are staying home with them.