Northern NJ 6b- concerned about yellowing already.

I’m in northern NJ and had my lawn redone by a pro 2 years ago. Came in great but last year grubs got it and ruined it. I nuked them too late and worked hard to salvage it. Came in really nice this spring and even enlisted a pro to handle quarterly treatments (fertilizer, pre-emergent, insects, etc) because I didn’t want to screw up again.

Well, it’s starting to yellow again and I’m concerned. I called my guy and he said it’s too early to be concerned about grubs, but that’s what got me in the past.

Pic of the front https://i.imgur.com/ZsLmYjV.jpg

No dog pee by the way.

Pic of front side. Blue line separates my yard from neighbors, which is all green. https://i.imgur.com/DH4ePuz.jpg

Is my pro not being truthful or misinformed? I’m not able to peel up patches of lawn like I could with the grubs last year, but I’ll be damned if I let them eat my lawn to death again!

Any advice would be appreciated!