Yeah. The guidance says "evenly spaced," and if you take that literally that would be every five months. I can't imagine the ECO sits there counting the intervals to be sure it's spot on, but I wouldn't want to be the one to advise someone that a long gap is fine, only for it to not be fine. So... aim for five months, but you can only give them what you have. If you have your financial stuff and can sort out proof you bought your house, I'm pretty sure your correspondence will be more than adequate. You're going to be fine. And think how awesome you're going to feel in a few weeks, after your ILR has come through, and you're all settled in your new house! One day in the not too distant future, you're going to be sitting back, relaxing with a hot drink, sighing contentedly in your house, without a care in the world.