I mean, the tennis part is well done, but since it's too focused on the tennis, it feels timeskipped too much

Barely nothing happened in his life aside from moving from a competition or another

match > training (months skipped) > match > repeat

it would be better to stray from main plot once in a while for some romance and slice of life

I agree its starting to get annoying. I might just drop it til its completed.

I plan on reading them two volumes at a time. It is starting to become tiresome.