Hi CG, you are not needing this just before going on holiday.
A while back I thought I had the beginnings of an ingrown nail on my right foot. A chiropodist neighbour told me to pack it with small amoipunt of cotton wool at side of nail where it was dogging into skin with cotton wool and this helps to stop the nail embedding into the skin.
Have a look online there are some sites showing you the correct way to do this.
Or try a beauty salon as for a file and paint of the toes, sometimes the nail has been cut the wrong way and this causes pain. A good salon would be able to advise.