AnimeLemonade
Mhm... People in other fanfics use gravity seals to train, maybe he could create a seal that is constantly training his body using chakra or natural energy somehow... Also should his Chakra not be even higher than normal for even Uzumaki's(due to being a reincarnated soul.) Spirit+ Physical= Chakra. So training the mindscape/spirit/soul whilst allowing his body to come up to standard...