move contribution from traditional to roth within same year

1. I contributed early in 2019 to traditional IRA. Now I realized that my 2019 modified AGI is below the limit to invest in RothIRA. Since I have not yet filed tax for 2019, can I ask the custodian to open a new Roth IRA and move the re-designate the contribution from traditional to Roth ?

2. I have a similar question but for 2020 as above. I am pretty sure this is doable since it is still within the year. But any suggestions on what procedure to follow would be good. I guess, I can ask the custodian.