Problem with AC to Salesforce updating a field

Newer to the community here!

Question regarding AC into Salesforce for updating fields. I think my automation isn’t triggering at the correct time. Here are my automation steps:

1. Automation starts when someone submits a form
2. Contact gets an email
3. Internal team gets notified
4. A new lead is created into Salesforce
5. Tag is added  - added to salesforce
6. Then Add lead to Salesforce campaign

I have a separate automation that is doing the following

1. When added to salesforce tag is added
2. Update lead source to ActiveCampaign

For someone reason the lead source isn’t updating. I have the fields mapped properly in the AC dashboard in Salesforce. I am thinking it may be the timing of it all? I tried added the “update lead source” after step 5 in the first automation but that didn’t work. The add to Salesforce campaign works although it takes 20 minutes!

Any ideas on what could be the problem?