I didn't have test kits, but when I was cycling, I anticipated amonia to go high, I had to do water changes daily. If it's really bad, maybe you can do 50% water change early in the day, then another 50% in the afternoon or at night, though I'm not really sure, I'm not an expert, but more water changes should help.
Also, have you considered zeolites? I put them in my filter box when my tank was cycling. As mentioned, I don't have test kits, so I had no clue what my amonia was, but zeolites are supposed to absorb them...