The question makes little sense.
Naruto possesses Six Paths Power anyway due to the Biju and Sasuke's Rinnegan boosts his eye-power with the Six Paths Power.
As far as the chakra that Hagoromo gave them is concerned, it was stated Six Paths Power of Light was the source of Naruto's Six Paths Sage mode, but he lost it after sealing Kaguya.
It was stated that the Biju's chakra makes him a pillar for the power of Ten Tails, which explains why he still has Six Paths senjutsu even after losing the Six Paths Power of Light.
He lost abilities like his healing power and the ability to infuse the Biju's chakra natures into Rasengan, powers that were exclusive to the seal.
The Six Paths Power of Shadow awakened Sasuke's Rinnegan, yet he needed to manually draw chakra from it to utilize Six Paths Power for his jutsu.
After losing Hagoromo's chakra, they didn't get any weaker.