Yep, keep on keeping on. I'm at level 12 now and I often forget half of what I'm supposed to say (darn those compound sentences). I'm already fluent at grumbling at @aran in both English and Dutch - looking forward to learning enough Welsh to diversify.
It really does get frustrating, acknowledge that but don't let it stop you. I feel like quitting all the time because my inner whiner thinks it's all "too ha-a-a-a-a-a-a-ard". I tell that voice (and the inner critic, and the inner perfectionist, and the inner pessimist): "I hear you. But I don't believe you."
Come back to the forum any time you need encouragement - it works for me anyway. Keep your eyes on the prize: we're learning a beautiful, melodic, poetic language and we have so many people here cheering us on!