Waalaikum assalaam wa rahmatullahi wa barakaatuh, Sis Amber.
I'll be straightforward. There is no such thing as 'wrong time' when taking shahada. In fact, any time is the right time for you to take it.
That feeling you had must be probably another form of 'frustration' you're talking about. I also took the shahada alone in English at first (silently to myself in my thoughts) and now I continue to do so in Arabic during prayers and dua. After all, most duas contain the shahada.
Let me share you some facts about myself. I also didn't pray initially for 1 year. Yeah, worse than your current situation, I tell you. I felt guilty watching a fellow Muslim going to/coming from a Masjid when I couldn't pray. And then I learnt salat from the internet. It was hard at first, but eventually I got used to it. Just learn the stuff bit by bit and ingest it slowly. You'll get used to it. Make sure you completely learn the salat before Ramzan.
I also don't wear the hijab currently due to tight circumstances. In fact, I simply wear a kurti (loose) and pajamas/jeans/pants all the time.
I'm apparently (patiently) waiting for a big diamond opportunity to present itself for me to follow Islam completely and sincerely. And I'm telling such a thing will present to you too.
So look at things on the brighter side. You can learn some sunnat actions and dua in the meantime since they please Allah (subhana wa taala). Read Surah Ya-Seen everyday as it's the heart of the Quran.
So, um, that's all I can tell you. Hope it helped.