You can't skip a year of RMDs because the new law prohibits that by stating that the age increase applies only to people who turn 70 1/2 in 2020 or later. Here's the actual text.
SEC. 114. INCREASE IN AGE FOR REQUIRED BEGINNING DATE FOR MANDATORY DISTRIBUTIONS.
(a) In General.—Section 401(a)(9)(C)(i)(I) of the Internal Revenue Code of 1986 is amended by striking “age 70½” and inserting “age 72”.
(b) Spouse Beneficiaries; Special Rule For Owners.—Subparagraphs (B)(iv)(I) and (C)(ii)(I) of section 401(a)(9) of such Code are each amended by striking “age 70½” and inserting “age 72”.
(c) Conforming Amendments.—The last sentence of section 408(b) of such Code is amended by striking “age 70½” and inserting “age 72”.
(d) Effective Date.—The amendments made by this section shall apply to distributions required to be made after December 31, 2019, with respect to individuals who attain age 70½ after such date.