Get your limit and give it to him. If you have some back home, do the same. Don't break the law.
I grew up in a country where hunting was a regulatory mess with hunters being routinely harassed. I appreciate the rights and protections afforded to me as a hunter here, even with all the hiccups and areas where things can be improved upon. Don't get in trouble over doves.
Also, given the old fella's poor eyesight, it is in your best interest that he doesn't shoot, as some have commented above