Yes, 2 years!!

It grows fast and isn't prone to split ends either, so it's just there, you know? That is why every time I think it would be nice to get it cut I decide to spend my money on something else. It did feel goooood to have it done now though
Now I need your advice on a more serious issue (for me at least):
My kids speak, read and write English. Mainly because they have gone to English speaking nursery and school, and because we lived in England for a year. I want them to be bilingual and I was planning to send our youngest to English speaking nursery as well. My problem is this: We had to move to the sticks because of my job. There are no international schools here so I have to be the one to see to that they keep using English. Getting them to read, especially Christiania, is quite easy. Christiania will speak to me in English as well. Nicholas used to do that. If I spoke to him in English he would answer back in English automatically. Now, after just little over month away from the old school he only rarely answers back to me in English. If I ask him to he will, but if I don't he'll speak Norwegian. I only talk English to them once in a while, usually while we're reading a book together or watching telly.
I am now considering making more of an effort, by simply going all out and speak English to them more or less the whole time. I know it will be a chore, especially at first, but I think it can be done. I am only afraid that I'll damage my kids while trying to help them

I am particularly worried about doing this and scrweing everything up because it isn't my first language. I just don't want years of practice and money to go down the drain all because I had to take a job in the middle of freaking nowhere.
Just a minor meltdown
What do you guys think?