You need to find out what you NEED daily, there are ways to do this… mathematical ways among others, and you need to plan things properly. You need to sit down with a solid plan… not a whole array of articles with oft contradicting techniques.
IME many of the cyclic methods of diet design on this site are more for the type of physique that gets down to single digits, fitness professionals and Bodybuilders etc. They are very useful for those who have the knowledge to choose the best method for them or their clients, but hundreds of lurkers here just get baffled.
You are carb cycling, and calorie cycling… except i suspect you are one of those people who has read far too many articles and confused the fuck out of yourself! i commend your progress i really do - but you need to change your whole thought-set about ‘losing weight’. You dont want to lose weight anymore - you need to improve your composition and ideally stay the same or gain weight now!
I believe you simply dropped calories far too much for far too long and as such lost your weight… but then some.
I may be way off - but from the info you gave, thats how it seems to me.
You need to work with a trainer, someone who knows what they are doing - they can then with your assistance, determine how many calories you need to maintain in a day… from there carb allowances can be designed and even carb cycling, although with your stat’s it is my opinion that is not in the slightest bit necessary.
I am happy to give advice to people in forums - and enjoy it, but i train client’s on-line for a living - so refrain from writing up lengthy diet and training plans on forums 
Anyway, as a general rule, you put ~25% of carbs after training, and more carbs in the morning than the evening - tapered off throughout the day most commonly.
As for meal caloric allowance (as with carb) you need to determine when you train, what your job is, what your lifestyle entails… the full detail of your metabolic ‘fingerprint’ (this is needed to determine your caloric expenditure in the beginning too) GENERALLY speaking (and please don’t follow this blindly, it is NOT specific to you in any way) you would either split meals evenly (6x500kcal=3000kcal) or have higher feeding in morning and PWO with smaller feeding’s in-between and smallest meals last thing at night and PreWO.
Carb cycling when advised, can be easily designed from this standpoint.
You have lost a hell of a lot of muscle over the year… i believe it was down to a very harsh diet over that period, resulting in a starvation response from your body; catabolising metabolic tissues to lower metabolism and provide further energy.
You can calorie cycle or carb cycle or protein cycle, you can train heavy and regular with lots of protein and even limit cardio, but if you are eating an average of 1000kcal-1500kcals at 5’9", you will lose your muscle very fast.
The reason i am telling you to change how you think is because you have come across as the classic bad dieter… if you ever went to eating ‘normally’ you would pile the weight back on, except this time with next to no muscle underneath and all fat.
I would - generally speaking - eat enough to keep you happy… eat clean foods only and slow carbs of any carbs you do eat (breakfast and PWO at least), eat protein… although i do not believe you need as much as you have been eating, and healthy fats… eat a balanced diet at maintenance basically.
If you want to do cardio do no more than 3x/wk and no more than 40-60 mins each session - that way you can trim off any excess calories you ate through exercise instead of diet.
You need to build some metabolic tissue - muscle, or else you will NEVER drop that extra fat you still carry. Never.
JMO
