So my question is, is there any possible way of sending all the transactions out as one output to a new wallet in order for it to be smaller in size and the transaction fee to be lower?
Be patient and hope that mempool high fee priority can get as low as 1 to 2 sat/vbyte again.
Patient is my name, I must say, and thanks for the straight-up answer, as it shows that there is no way rather than just waiting for the fee to go back to normal.