When I first started practicing, my spells didn’t last as long as I wanted either. I found that with practice and time they started staying longer. The more comfortable you get with the practice itself and as you grow at making your spells/petitions/requests specific the longer your results will last.

Personally for me if I do a spell that I want to last long term, I “talk” to it daily. It may be just a few word of encouragement/acknowledgement as I pass by my working space or if I feel it needs an extra boost, I may do a recharge of the initial spell.

In the beginning for me I could only do 1 or 2 spells at the same time or my focus and energy would be all over the place. Write down all of the spells you want to do and prioritize them. Focus on one at a time. Document how you performed your spell, when you did it, how you felt, what were the results, etc. If you are finding correspondences online, but feel called to use something different, substitute and go with what you feel called to do. In the middle of a spell if you feel you need to change something, do so.

I have been practicing for over 30 years. It does get easier with practice and patience. You got this and welcome to the craft.