Congratulations and well done!
From that age and for quite a while after DS would only feed in a quiet darkened room - you may find reduced distraction helps.
Also, some mums find a necklace or something like that to attract their attention while feeding can really help save their skin.
I found at this age DS was feeding very quickly compared to earlier, but there is a wide variation in normal of course - if that's how long he wants to feed, then that's fine.