Man I have been having all kinds of problems, my chemistry was fine

but then I lost my O,
replaced him with two, lost one of them from the same signs and symptoms but treated the tank with
jungel parasite clear, and after the baby O died my chem levels are back to sh*t , and I just cant get them back.
so I guess for sure im in cycle hell all over again, I hope this isnt putting to much stress on the other O
I have been doing 20% water change daily but my levels are at.
PH 7.2
Ammonia .25
Nitrite 1.0
nitrate 10
should I be doing larger water changes? till I get the numbers back?
fed up
Zoo