If the novel is any good, you'll continue reading despite not setting away time and it will also be worthwhile to read in every minute of spare time you can get.

Just finished up my second re-read of an unfinished book that kinda ruined most entertainment for me by setting the bar too high. I now have to make the difficult decision to either be disappointed by another novel or to just read this one yet again.

Usually I find it a bit tough to finish books and I never re-read anything in my life before for entertainment.

So if it is a bit tough, probably the book is just not good enough for you.