u/Fit_Ad7380

I put new topsoil and used Jonathan Green Black beauty seed. This is 5 weeks post spreading I applied magical and starter fertilizer at the same time.
I’m hosting a graduation party @ the end of June and hoping this will fill in decently by then.
Should I be reseeding the more bare spots with annual to get it to thicken up or is it going to fill in? I’m in ct and have mowed it twice. It’s growing well where there is grass but it seems to be patchy.