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Millisecond pulsars (MSPs) are the fastest spinning compact stars known to date. They can appear as radio pulsars powered by the rotation of the NS magnetic field or accreting X-ray pulsars powered by the accretion of mass transferred by a companion star. The accreting millisecond X-ray pulsar SAX J1808.4-3658 has revealed an abrupt increase in intensity beginning in 19 August 2022 comma indicating the onset of a new outburst. This activity has never been observed since the last outburst in 2019. During the outburst this source emits X-ray pulsations at the neutron star spin period comma which have been already detected with NICER. Ultraviolet millisecond pulsations have also been detected from SAX J1808.4-3658 during its 2019 outburst with HST-STIS comma representing the first discovery of this kind in accreting MSPs. For the first time in forty years of pulsar studies comma we might have witnessed that electrons are accelerated to relativistic energies by the rotation of the neutron star magnetosphere even during the accretion phase. To probe the nature of this new phenomenon comma we require disruptive activation time to observe SAX J1808.4-3658 with HST STIS-NUV-MAMA instrument combination to study UV pulses during the 2022 outburst. The detection of UV pulsations close to the peak of the outburst comma when the mass accretion rate is maximum comma would allow us to probe the UV pulse emission mechanism over a range of mass accretion rates spanning 2-3 orders of magnitude.