I created a Spreadsheet a very long time ago and every day entered in my calorie intake. I also put my weight in when I did weigh myself. Occasionally I use the average function to work out the average of calories I need to maintain, what to lose and what to increase. This worked wonders for me so I was able to transition into maintenance and actually maintain, only fluctuating by the odd 1-2lb here and there depending on fluid retention etc.
What works for you may not for others, so perhaps your best best would be to increase your calories in small increments and see what happens.