Catherine of Aragon had 6 pregnancies total, over 9 years of marriage:
A miscarriage or premature stillbirth, daughter, January 1510;
A son Henry, 1st of January 1511 - died before age 2 months;
A son, October 1513 - either stillborn or died in a few hours, not named;
A son, December 1514 - named Henry but died an unknown short time later (few hours to month)
Bloody Mary, February 1516
A daughter, October 1518, unnamed, lived from few hours to 6 days.
She was 33 by then, and no more pregnancies for the rest of the marriage.
12 months spacing from stillbirth to live son was acceptable.
If Anne, instead of miscarrying a boy in January 1536 (4 months), had stayed pregnant to term (June-July 1536) then Henry would certainly not have invented a plot in April-May 1536. After the disappointment of another girl - inventing the plot took 3 months OTL after the January 1536 miscarriage, so it would take time as well.
And the miscarried, malformed boy was used OTL as bad PR to denounce Anne Boleyn as witch. A healthy daughter would be disappointment but would not be such useful bad PR.
Anne Boleyn OTL also had a miscarriage sometime in 1534 - sources vary whether it was summer or winter. This did cause Henry to consider Jane Seymour, but he went on to reconcile with Anne in 1535.
So, consider OTL where Anne has 3 living and healthy daughters by July 1536 (Elizabeth, another born late 1534, and the third born July 1536). Catherine is dead as per OTL, and Jane Seymour on the horizon again as per OTL.
Would Henry try for fourth time?
With less dirt available against Anne than in OTL, what would he try to do?