Elhamdulillah thats great, three years, I reverted in February of this year elhamdulillah.
I know how you feel though, I have a terrible memory and I find Arabic so difficult to memorise aswell but hopefully inshaAllah i will learn more and more.
InshaAllah you will pray the five daily prayers, your intention is there and thats half the battle!
Also from time to time I miss prayers I'm ashamed to say, and i realise that once I miss one, the next one goes too and so on....
so i think the answer is to just look after one prayer at a time and inshaAllah it gets easier to remember and easier to motivate yourself..i find it a bit hard anyways...
And its written in Quran:
'Seek help in patience and prayer;and truly it is hard save for the humble-minded' 2:45