Convert VTI to VTSAX?

Question about my Vanguard portfolio… I have $186K total with Vanguard, split between a traditional IRA with $176K all in VTSAX, and a Roth IRA that I contribute to bi-weekly with $10K all in VTI. Now that I’ve hit $10K in my Roth IRA, should I convert from VTI to VTSAX? I know they’re essentially the same. But the only reason I was investing in VTI in my Roth IRA is because I contribute bi-weekly and only buy about 1 share at a time.