No it won't be bad... that's the first stage anyway giving treats.
Does he sleep a lot?- if he's sleeping a lot during the day he could be sick or not getting enough sleep. Your bird needs 12-14 hours good sleep per night in complete darkness.
The singing is beautiful though and if he tucking his head in his wing and napping 2-4 times a day that's ok.

Like short little naps that's normal but if its very often then you need to get a vet check or make sure your bird gets enough sleep.
I cover my birds cages with black sheets (don't use scented washing powder on these its bad) just use a very hot wash with no powder or liquid. Just a pointer/tip because the other video of your bird seems it healthy

Oh and while your at the pet shop maybe look for some more perches for that or a bigger cage you could save up for?