Oh dear... She certainly shouldn't be advising that at all, especially that young! Your child is still in the 4th trimester. Sorry that she's given you such poor advice.
Unfortunately I haven't got an easy answer, it's a case of finding what works for you all.
With mine I sort of started a relaxed routine, at that age I tried to make sure she wasn't awake for more than a few hours so she didn't get overtired, would often feed to sleep, rubbing gently between her eyes and nose seemed to help settle her. Sometimes we rocked, sshed etc whatever she needed at the time. White noise also helped a lot as it's calming. She would often fight naps as she didn't want to miss out, was certainly an alert baby lol
It gradually got better and easier as we found what worked for her... Nap times became a lot less stressful, we went with the flow, especially as she got older and had to nap less. She's 21 months now and rarely naps now but that's just her. Still sleeps great at night thankfully.
I think one of the main things is, to try not to stress about it (easier said than done), and don't be afraid of doing whatever they need at the time... I was so afraid of "making a rod for your own back" but realised that it's not the case, your just doing what your child needs at the time.