I would be interested in seeing more granular data about Asian voter preferences across ethnic lines - as well as by class and location. Judging by precinct data, it seems like inner-city, working class Chinese and Indian neighborhoods had marked shifts toward the GOP in 2020. It's harder to say if the same held true in suburban areas, since Asians tend to be less concentrated (living in neighborhoods that are majority white or in some cases with a larger non-white population like Latinos), so the swings in those areas could be attributed to these other racial groups. I would also assume that some ethnic groups, specifically Vietnamese-Americans, had large shifts regardless of where they lived.
Which neighborhoods/metro areas are you referring to? I noticed that Asian areas generally had smaller R swings in 2020 than Latino areas (San Francisco proper might be an exception). Per the NYT precinct map, there were some heavily Asian suburban areas (at least in the Portland area) where Trump's percentage went down from 2016, and the areas with a Vietnamese presence didn't really swing R even if Trump's percentage went up because Biden also gained from HRC. I also remember there wasn't much of a R swing anywhere in Oakland or Long Beach.
2016-2020 swings don't tell us very much about long-term trends. I certainly don't think Asians will ever be as one-sidedly D as blacks have been post-1980, but I can't see AAPI voting patterns converging with any segment of the white vote either. Half-Asians like Bagel23, Forumlurker161, and West_Midlander may be a different story.