Gelding uncomplicates the problem but doesn't solve it. You must still learn to behave differently and set limits. Female llamas can become disrespectful and difficult too. My policy is to treat males and females babies no differently. I insist on respectful behavior from both sexes.
Babies do best if they have other babies to play with.
With other babies around in many cases, the whole problem becomes a non-issue. If you are going to have a single baby, think about forming a baby llama play group. Contact other breeders that are going to have single babies. Make arrangements to board your female and baby at their farm for a month or two and then move both mothers and babies to your place for two months. The hassle is well worth it and you will both benefit from the enjoyment of watching the babies play together.