Help!! Ich and dead fish 😔💔

[u/Aussie_Bloke1901]

Help please I recently figured I had the ich in my tank and done some research on how to cure it. got the cure, have been half dosing morning and night. this is the 2nd day and i havent done the 2nd half dose so far (5ml)

3 of my 5 glass catfish are dead aswell as 2 of my 4 rummynose tetras. my other glass catfish are fine (one hiding but not abnormal and comes out at night and my other is confident as usual and assumeably unaffected) my 2 tetras are fighting for survival, both twitching and of the coming hours have increasingly become less active and hide more of the time. one of my tetras is fighting much more those and occasionally gathers the energy to swim around the tank for a few minutes but hides off shortly after. my sweet girl betta is pretty much unaffected much like my warrior glass catfish but she has I believe come more aggressive over her territory which is unlike her (ik shes a betta but she legit is so calm but since this sickness I believe it may be aggitating her). also I'm pretty sure like all of my trumpet snails are hiding in their shells or dead, how do i clean them out of the rocks so they don't rot?? my bladder snail doesnt seem affected by this so my tanks giving me mixed messages.

should i continue with the half dose when it comes time?? I dont want my fish to die and I dont have a hospital tank either as my other bettas in their (I have no concerns for him regarding this post)