The baby has been sleeping terribly during the day. He sleeps well at …

The baby has been sleeping terribly during the day. He sleeps well at night, waking up only to eat before morning. We wake up around 9-10 AM, we go for a walk for two hours and most of the time we go to sleep together. There's no problem with that. But after this nap it's very difficult to put him to bed again. That is, it happens after the first nap in the day. It lasts about two hours, he starts to be capricious and wants to sleep, I start putting him to bed, first without rocking, just on his chest. So he doesn't fall asleep. Then after feeding I start rocking him in my arms. Seems like he falls asleep for 2