2d. Relax a little getting high on LSD at first then joint (3,2,3,4,3). L?T ?T ?L? H?N? ??T. Is the answer "Let it all hang out"? If so, I really can't see why.
20d. Acting medic visits in the morning on two occasions. (2-4).?M-??M.
23a. Old member f family takes trip round river in US (3,6). ??? ?R???E.
18d. All-girl group that didn't live up to its name? (7). E?E???L.