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In this work, we present a status update and results of the designatedresearch and development VLBI Intensive program VGOS-INT-S, observed betweenMACGO12M and WETTZ13S for the rapid determination of the Earth's phase ofrotation, expressed via UT1-UTC. The main novelty of these sessions is the useof a special observation strategy, rapidly alternating between high- andlow-elevation scans, enabling an improved determination of delays caused by theneutral atmosphere. Since 2021, 25 Intensive sessions have been observedsuccessfully. In early 2022, VGOS-INT-S was among the most accurate Intensiveprograms with an average formal error $\sigma_{UT1-UTC}$ of 3.1 $\mu$s and abias w.r.t. IERS C04 of 1.1 $\mu$s. Later, the session performance decreaseddue to multiple technical difficulties.

VGOS VLBI Intensives between MACGO12M and WETTZ13S for the rapid determination of UT1-UTC