Pump it up again and take it for a ride. It's the best way of distributing the sealant in my experience. If it still doesn't stay up then I'd start feeling suspicious about the tape and/or valve seating.
I'm taking it for a proper ride tomorrow so will report back on the tyres. The learning from yesterday evening was 80psi is too much in them for a sub-62kg weakling like me.
Pump it up again and take it for a ride. It's the best way of distributing the sealant in my experience. If it still doesn't stay up then I'd start feeling suspicious about the tape and/or valve seating.