Wind down crying at bedtime

My five month old has been successfully sleep trained for a month now. I nap trained a couple weeks ago and it has gone great. Whenever I have him home from daycare or on the weekends, he goes right down for a nap in the crib with little to no fuss.

However, every single day for bedtime, he cries to wind down. It’s not wailing or screaming, just a mild cry and it starts as soon as I put him down and continues for 5-10 minutes then he is conked out for the night. When I put him in the crib for bed, he is definitely ready for bed (red eyelids, starting to fuss, proper wake window) so I don’t think it’s a matter of not being tired enough.

Anyone else have this with their LO and did it stop eventually?