3 week old not sleeping during day

[jetta2022]

Hello,
Just curious if there are others out there. My 3 week old sleeps really well at night between 2 feedings. This morning I fed him at about 7.45am, we had brief tummy time and a cuddle then after yawns I put him in his cot. He stays awake til pretty much the next feed. At first he lies there quiet for around 2 hours but then starts crying. I rock him and he does settle for small amounts but then starts crying again so I feed him. Then he sleeps after that feed. This is something he has been doing for days now. Every time he is awake for a small amount after his feed (only ever around 20 minutes before he starts yawning) he does this. Is this reasonably normal?? I guess I just want reassurance that lots of other babies do this too??!! I just didn't want to get him in a habit of feeding him to sleep but I know he is also very young too..
Any advice or opinions would be appreciated! Thanks!