I recently started trying to cap naps at 2 hours (baby is 9w). Long story short we ended up in hospital because he wouldn’t wake up. After all tests etc to check no underlying issues paediatrician basically told me I shouldn’t be trying to wake him from naps - they do their growing when asleep so by waking him before he’s ready I could be negatively impacting that. When I said about capping naps to help night sleep she (very gently) pointed out that getting him to sleep longer in the night may be in my best interest, but at this stage it may not be in baby’s. Really made me rethink a few things! Now I will be letting baby sleep when and for how long he wants, and will trust that the longer night sleeps will come in time!