It’s a lovely watch but if you have to ask then the answer is probably yes, it is too big.
I have skinny wrists but in my earlier collecting days, I bought a few 40mm watches and after the first flush of acquisition, didn’t really wear them. Luckily mine were Seikos and they were ideal presents for sons in law with bigger wrists.
I found that 35/36 even 38 were more comfortable to wear and felt better on my wrist particularly if they weren’t dive watches, which not only have wider diameters but generally greater depth/thickness.
Good luck with whatever you decide