Can I charge an HP Spectre x360 with charger (3A&5V or 2.77A&9V) in its USB-C Thunderbolt 3 port?

I have an HP Spectre x360 15-eb0002ne. It comes with a 135-watt charger. I’m wondering if I can charge it with the USB-C Thunderbolt 3 port. I read its user guide, and I reached the input power section.
I don’t know if I am right, but does this section mean that I can use a phone charger of 25 W (3 A and 5 V or 2.77 A and 9 V) with my laptop’s USB-C Thunderbolt 3 port? Is that good for the health of the battery? If not, what is the lowest acceptable wattage number?

Thanks in advance