Queries related to Pranayama

Dear sir,

I have been doing yoga (asana, bandha, nadi sodhana, pranayama, meditation) for the past 4 months, For pranayama I am doing 24 counts(breath holding) for the last 2 months(I started with 16 and then increased to 24 after 2 months, my question is as follows

1. While doing nadi sodhana, my breathing pattern has become very silent and smooth recently (initially there was some sound +heaviness),  I do nadi sodhana for 5 minutes (1 cycle takes around 40 to 50 seconds), so I can say I do around 6-7 repetitions in 5 minutes.(Do I need to increase this to 10 minutes? )I feel so much relaxed after nadi sodhana

2. While doing Pranayama,( I do 6 repetations), for first 2 repetation my breathing is very smooth+ no sound , after that it becomes heavy with sound and it is fast as if I cannot fully control my intake or exhaust.( I feel as if I cannot take breath smoothly as I do for nadi sodhana) Am I missing something here or is it ok to continue like this until I can do it smoothly: I feel I am not in control of my breath.

3. Food:- These days, I feel that my stomach is full even with a little of food and I do not feel much appetite especially in the night. (can I drink just 1 cup ragi + 1 small banana+ 2dates) will that be sufficient for the night