I promise you he will not starve. I think you'll probably find that as the dry food is left down all day he never goes hungry and is used to "grazing" all day. If he is hungry he will eat so I would say feed him 2 meals a day (how old is he? if still a growing pup will need more) and after 15 minutes take the bowl up if not eaten, keep repeating this but stick to the meal time.

I know you will feel guilty and be tempted to give him something. Trust me I had exactly the same problem with my boy. It does work and you have to resist your guilt.

I let my boy be a fussy eater for about 10 months and it became all my life was about. Someone suggested I do what I am suggesting to you and after a day he soon cottoned on. I still use that rule now, if it isn't eaten it gone till next time, and to be honest I very rarely lift a full bowl.