Relax, don’t hurry. You let go of craving - letting go of craving is also part of meditation.
Right effort is perseverance, moment to moment, not hard effort. Patience and perseverance; don’t give up – gently, gently, not forcing or using a lot of energy.
You don’t do too much in meditation – just using mental energy to be present.
Feeling good is very important in meditation; you must feel good about meditation. If you don’t, then nobody wants to meditate; if it’s so tiring, who wants to meditate? Right?