Hello Sophia!
Great to hear from you again and that you are sleeping better. What you are going through is extremely common to everyone during this part of the recovery, thoughts like “What if my insomnia comes back??” The answer is always acknowledgement and acceptance whatever your mind wants to tell you about. Worried you cant sleep because you neighbour dog keeps barking? Accept. Worried drinking too much water before bed causing you to go to toilet more often therefore affecting your sleep? Accept. Your mind will come up with a million excuses of how your sleep will be affected. Your response: Whatever man, I accept these thoughts. Just accept whatever your mind tries to warn you about. Never fight or try to escape from your thoughts because this is what your brain is wired to do, keeping you safe from any potential threats like not sleeping. You cant avoid your thoughts but you can choose whether to believe it or not. Do you have to believe every single thing your mind keeps warning you about? Well, no because most of them are likely future events and who knows what can happen in the future. You live in the present moment so try to enjoy your day as much as you can, do things centred on your personal enjoyment and development, not sleep. Tell yourself you will deal with any sleep disruption WHEN it happens, not before, IF it happens. But you are much more likely to sleep if you follow the rule of allowing enough wakefulness before going to bed so these thoughts and the associated anxiety will start become fleeting (pops into your head then pops back out again because you pay less and less attention to them) then disappear completely. Then if you do sleep poorly occasionally, which is normal because everyone gets poor nights once in a while, continue your day as if nothing happen and be non jugdmental about it. Your sleep should recover the next day if you do nothing. You are doing great and slowly getting there. Hope to hear about your success story soon! Keep it up!