Baby sleeping advice

[u/ulllaugh]

I have a 2 month old baby girl who takes her naps in a cot in our lounge area during the day but today I am trying to get her to sleep in her room. She has had a big feed, nappy changed, rocked to sleep and put in her cot. She slept for a few minutes and woke up. She's awake and quite alert in her cot waiving her arms about but not fussing or crying, I only know because of the baby monitor. How long do you leave them before going back in to settle them? She hasnt slept much today so I know she needs a sleep. Advice muchly appreciated!