Please any advice... I put him down to my baby to sleep on his own and he starts playing ..

So he is 19 weeks, more than 4 months and he has a consistent bed time, and he has pretty much sleep on his own but it's been more than 3 weeks he doesn't want anymore nap on his bed. So now I feed him I put him down he is awake he is tired (I tried even a little bit earlier when he is not that tired) and he doesn't cry he just start to rolling over playing even if he is using his sleepy bag!!!! So today took me 2 h and after that he finally went to sleep!

I went check him, rub his back , after 5 min I gave him his pacifier... after 30 min... I tried to nursing again he fall asleep on my arms and I put him down he woke up and he starter to play again 🙄

Any tip please!!!!

How can I track my baby sleep on his own or better method something..

Because he does that during the night also ...and he is not hungry he just wake up and he can't fall sleep on his own o tried ...until I gave him the breast..