Fussy eater - HELPPPP

My son has been like this for MONTHS now and its getting on my nerves

Breakfast and lunch he is no problem with eating

Dinnertime he will literally only eat pesto pasta or maybe a potato waffle

He always used to eat anything I gave him (whatever we had for dinner) and then just switched one day to ‘hating’ almost everything and refusing to eat dinner

Luckily he has no issues with bowel movements which I’m very glad about but this just can’t carry on and I’m almost at my wits end with frustration

Anyyyy suggestions are welcome