I lay for two months
It has been less than three years since Victor Frankenstein had been
seized with a similar "nervous fever" that, after the creation of his
being, confined him for months (see 1.4.7 and note). Mary Shelley emphasizes how severely
debilitated his physical state has become as a result of the acute
psychological stress under which he has been laboring and from which no
amount of diversion can seem to liberate him.